The size of a sample (often called the number of observations) is important. 13. They both did. Which pair is farther from camp? Save my name, email, and website in this browser for the next time I comment. When a car is randomly selected, it is found to have 3 wipers. This data helps a company analyze its business, design its strategies, and help build a successful data-driven decision-making process. By using simple random sampling, select states to be part of the cluster. There are many different potential problems that can affect the reliability of a sample. A.The data are continuous because the data can only take on the data can only take on specificvalues. Record the three quiz scores in column one that correspond to these three numbers. Work more on basics as they form the basis for many other concepts. Both samples are biased. Self-selected samples: Responses only by people who choose to respond, such as call-in surveys, are often unreliable. Your email address will not be published. LCM of 3 and 4, and How to Find Least Common Multiple, What is Simple Interest? Now, suppose we take a third sample. b. Using a calculator, random numbers are generated and a student from a particular discipline is selected if he or she has a corresponding number. If we were to examine two samples representing the same population, even if we used random sampling methods for the samples, they would not be exactly the same. The data are continuous because ), Marital status (Single, Widowed, Married), When companies ask for feedback, experience, or satisfaction on a scale of 1 to 10, Letter grades in the exam (A, B, C, D, etc. What type of data is this? Ordinal data have natural ordering where a number is present in some kind of order by their position on the scale. State whether the data described below are discrete or continuous, and explain why. Results are the outcome of our efforts and if you believe that you have put your best, then you will surely be able to score good marks. All you can do right now is to just take a deep breath and believe in yourself! Q: State whether the data below are discrete or continuous, explain why. State whether the data described below are discrete or continuous, and explain why. Our choice also depends on what we are using the data for. For example, 16-ounce cans of beverage may contain more or less than 16 ounces of liquid. 2013 - 2023 Great Lakes E-Learning Services Pvt. Discrete Data Examples: The number of students in a class, the number of chocolates in a bag, the number of strings on the guitar, the number of fishes in the aquarium, etc. Number the population 120,000 and then use a simple random sample to pick a number that represents the first name in the sample. Data is the new oil. Today data is everywhere in every field. B. Evaluate it on its merits and the work done. For these samples, each member of the population did not have an equally likely chance of being chosen. This website is using a security service to protect itself from online attacks. Finite values have discrete data. A high school educational researcher interviews 50 high school female teachers and 50 high school male teachers. The station uses convenience sampling and surveys the first 200 people they meet at one of the stations music concert events. c . Explain your reasoning. The discrete data contain the values that fall under integers or whole numbers. For example, it does not make sense to find an average hair color or blood type. (We assume that these are the only disciplines in which part-time students at ABC College are enrolled and that an equal number of part-time students are enrolled in each of the disciplines.) The quiz scores (20 of them) in these 2 columns are the cluster sample. It is further classified as discrete data and continuous data. O C. The data are continuous because the data can. Record the number of ones, twos, threes, fours, fives, and sixes you get in the following table (frequency is the number of times a particular face of the die occurs): Did the two experiments have the same results? The numbers generated are as follows: 0.94360; 0.99832; 0.14669; 0.51470; 0.40581; 0.73381; 0.04399. on any value in an interval . Hair color, blood type, ethnic group, the car a person drives, and the street a person lives on are examples of qualitative data. Because students can complete only a whole number of hours (no fractions of hours allowed), this data is quantitative discrete. according to measurement accuracy, it can be significantly subdivided into smaller sections. state whether the data is continous or discrete The durations of The continuous data can be broken down into. Opinion poll posted online at: www.youpolls.com/details.aspx?id=12328 (accessed May 1, 2013). A more technological way is for Lisa to first list the last names of the members of her class together with a two-digit number, as in Table \(\PageIndex{2}\): Lisa can use a table of random numbers (found in many statistics books and mathematical handbooks), a calculator, or a computer to generate random numbers. Indicate whether quantitative data are continuous or discrete. Suppose ABC College has 10,000 part-time students (the population). Each method has pros and cons. You sample the same five students. Thats why it is also known as Categorical Data. A histogram is used to display quantitative data: the numbers of credit hours completed. The Literary Digest Poll, Virtual Laboratories in Probability and Statistics, Gallup Presidential Election Trial-Heat Trends, 19362008, Gallup Politics. On the other hand, if we count large quantities of any discrete entity. Data is classified into 4 types. Great Learning's Blog covers the latest developments and innovations in technology that can be leveraged to build rewarding careers. Get Into Data Science From Non IT Background, Data Science Solving Real Business Problems, Understanding Distributions in Statistics, Major Misconceptions About a Career in Business Analytics, Business Analytics and Business Intelligence Possible Career Paths for Analytics Professionals, Difference Between Business Intelligence and Business Analytics. Question: State whether the data described below are discrete or continuous, and explain why. Data that can only take on certain values are discrete data. The class boundaries are 10 to less than 13, 13 to less than 16, 16 to less than 19, 19 to less than 22, and 22 to less than 25. the data can only take on specific values . Discrete data is data that can only take certain values, while data that can take any value is continuous data. The volume of cola in a can is 11.8 oz. State whether each situation is categorical or quantitative. The numbers of majors offered by colleges Choose the correct answer below. The numbers of programs installed on various computers ANSWERA.) O A. I want to study the topic of Statistics for my college-level exams? B. But graphs can be even more helpful in understanding the data. Ungrouped frequency distribution of discrete data is performed against a single value. Which experiment had the correct results? categorical, quantitative discrete or quantitative continuous. This site is using cookies under cookie policy . The data are discrete because the data can only take on specific values. To find the average annual income of all adults in the United States, sample U.S. congressmen. Log on to our website and explore courses delivered by industry experts. Name data sets that are quantitative discrete, quantitative continuous, and qualitative. As you become accustomed to sampling, the variability will begin to seem natural. Think about what contributes to making Doreens and Jungs samples different. B. For the purpose of analysis, data are presented as the facts and figures collected together. Work collaboratively to determine the correct data type (quantitative or qualitative). While working on these data, it is important to know the types of data to process them and get the right results. No. State whether the data described below are discrete or continuous and explain why The amounts of time that different - Answered by a verified Tutor . The data are continuous because the data can only take on specific values. Compare the fractions 999/10,000 and 999/9,999. Those 100 students are the sample. Numeric variables represent characteristics that you can express as numbers rather than descriptive language. OC. We might make different choices of what we think is the best graph depending on the data and the context. From that number, count ten quiz scores and record that quiz score. They may be related (correlated) because of their relationship through a different variable. Types of soups, nuts, vegetables and desserts are qualitative data because they are categorical. Quantitative data are the result of counting or measuring attributes of a population. Doreen and Jung each take samples of 500 students. Position 1 is less than the distance from G to H in Position 2. b. A. There are particular calculators for different statistics exams and having good knowledge about their use and implementation would be great. To find the average GPA of all students in a university, use all honor students at the university as the sample. What can you conclude about the angles opposite these sides? If the survey is done well, the answer is yes. Nominal data.Ordinal data.Discrete data.Continuous data. Statistics involves organizing, analyzing, interpreting, and representing data. Your phone book contains 20,000 residence listings. However the third random number, 0.14669, contains 14 (the fourth random number also contains 14), the fifth random number contains 05, and the seventh random number contains 04. Continuous data are in the form of fractional numbers. a. And this is the reason why most students find it to be an interesting subject. Which two towers are closest together. Once you are clear with the basic concept, you shall be able to understand additional concepts easily. Quantitative data, on the other hand, is one that contains numerical values and uses a scope. In reality, a sample will never be exactly representative of the population so there will always be some sampling error. Points in a graph of the discrete function remain unconnected. Statistics is a quite tough subject but for those who know how to use their mind, its the best one for them as it involves more practical knowledge and conceptual learning. a. stratified; b. systematic; c. simple random; d. cluster; e. convenience. The freshman, sophomore, junior, and senior years are numbered one, two, three, and four, respectively. Show Less. OOO O A. It includes only those values which are separate and can only be counted in whole numbers or integers, which means that the data can not be split into fractions or decimals. Most data can be put into the following categories: Qualitative data are the result of categorizing or describing attributes of a population. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. 5. Do you think that either of these samples is representative of (or is characteristic of) the entire 10,000 part-time student population? Note: randInt(0, 30, 3) will generate 3 random numbers. Step 2: Discrete and continuous data. 1. So is the case of statistics too. What type of data does this graph show? The data he collects are summarized in the histogram. Do you think that this sample is representative of (or is characteristic of) the entire 20,000 listener population? Data that takes distinct values and cannot be in decimals is called discrete data. 10. the type of car you drive. Items a, e, f, k, and l are quantitative discrete; items d, j, and n are quantitative continuous; items b, c, g, h, i, and m are qualitative. The height of a student from age 5-15 is continuous data because the height varies continuously from age 5-15 which is not a constant for 10 years. Statistical data needs to be critically analyzed, not simply accepted. Confounding makes it difficult or impossible to draw valid conclusions about the effect of each factor. Since these samples are not representative of the entire population, is it wise to use the results to describe the entire population? Sample size issues: Samples that are too small may be unreliable. The two-digit number 14 corresponds to Macierz, 05 corresponds to Cuningham, and 04 corresponds to Cuarismo. What type of data is this? 1. This particular bar graph in Figure \(\PageIndex{4}\) can be difficult to understand visually. First, we use convenience sampling and survey ten students from a first term organic chemistry class. Your email address will not be published. The amount of money they spend on books is probably much less than the average parttime student. Self-funded or self-interest studies: A study performed by a person or organization in order to support their claim. Press ENTER 2 more times (even the repeats). Since this is the case, sampling without replacement is approximately the same as sampling with replacement because the chance of picking the same individual more than once with replacement is very low. Ans: Ducks in a pond are discrete data because the number of ducks is a finite number. These data dont have any meaningful order; their values are distributed into distinct categories. A random number generator is used to pick two of those years. Rational Numbers Between Two Rational Numbers, XXXVII Roman Numeral - Conversion, Rules, Uses, and FAQs, Find Best Teacher for Online Tuition on Vedantu. Whenever you face any problem the best solution is consulting the concerned teacher, you should never hesitate to ask for doubts. It is classified into two broad categories: qualitative data and quantitative data. You can go for a business analyst or a statistician or a financial analyst or even an economist etc. In the graph, the percentages add to more than 100% because students can be in more than one category. B. If they are not, discuss the reasons. The exact distances (in centimeters) between the chairs in a college classroom. These data take on only certain numerical values. . C. You should know how to manage your time and utilize it in the best way possible. Difference Between Continuous and Discrete Data, Questions on Discrete Data Continuous Data. Suppose Doreen and Jung both decide to study the average amount of time students at their college sleep each night. State whether the data described below are discrete or continuous and explain why The amounts of time that different brands' batteries last in a CD player. The students spend the following amounts: $180; $50; $150; $85; $260; $75; $180; $200; $200; $150. The continuous data can be broken down into fractions and decimals, i.e. It may take any numeric value, within a potential value range of finite or infinite. B.The data are discrete because the data can only take on specific values. Press 5:randInt( and enter 1,6). A type of sampling that is non-random is convenience sampling. The data are the colors of backpacks. The prison populations of different countries ha Choose the correct answer below. The data are continuous because the data can only take on specific values . The data are continuous because feet, 180 sq. There are two types of data: Qualitative and Quantitative data, which are further classified into: Now business runs on data, and most companies use data for their insights to create and launch campaigns, design strategies, launch products and services or try out different things. Samples of only a few hundred observations, or even smaller, are sufficient for many purposes. For some students, it might feel difficult as it involves logical thinking and mathematics but its a great option for those who love solving and putting their minds all into logic. the distance it is from your home to the nearest grocery store. O C. Excelling your basic knowledge about the subject promotes conceptual learning and hence, you can easily get familiar with new concepts too. a. stratified; b. cluster; c. stratified; d. systematic; e. simple random; f.convenience. The colors red, black, black, green, and gray are qualitative data. You can get study material, solved and unsolved questions, and also quizzes which will help you test your knowledge. The total number of students in a class is an example of discrete data. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. . B. What is the type of sampling in each case? Besides the chemistry course, some of them are also taking first-term calculus. Be aware that as you take data, your data may vary somewhat from the data someone else is taking for the same purpose. Amount of money, pulse rate, weight, number of people living in your town, and number of students who take statistics are examples of quantitative data. The numbers of countries in the world in different years Choose the correct answer below. Nominal Data is used to label variables without any order or quantitative value. Doreen uses systematic sampling and Jung uses cluster sampling. The second pair starts due west and then turns 40 toward south. O C. Notice that the frequencies do not add up to the total number of students. Measuring angles in radians might result in such numbers as \(\frac{\pi}{6}\), \(\frac{\pi}{3}\), \(\frac{\pi}{2}\), \(\pi\), \(\frac{3\pi}{4}\), and so on. O A. (2012), D is the discrete character data, z is a particular character mapping, and are the parameters of the hOUwie model. State whether the data described below are discrete or continuous, and explain why. pair starts due east and then turns 50 toward north. When properly selected, larger samples model the population more closely than smaller samples. Create a stratified sample by column. Compared to nominal data, ordinal data have some kind of order that is not present in nominal data. Record the quiz scores that correspond to these numbers. 2003-2023 Chegg Inc. All rights reserved. For accuracy, carry the decimal answers to four decimal places. If we have quantitative data, such as the correct number of questions on a test, then the data can be continuous or discrete. In this article, we have discussed the data types and their differences. If you're asked whether age is a continuous or discrete variable in an Introductory Statistics class, the correct answer is technically continuous. The gender of a person, i.e., male, female, or others, is qualitative data. Learn data analytics or software development & get guaranteed* placement opportunities. However, generally, we use age as a discrete, NCERT Solutions for Class 12 Business Studies, NCERT Solutions for Class 11 Business Studies, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 9 Social Science, NCERT Solutions for Class 8 Social Science, CBSE Previous Year Question Papers Class 12, CBSE Previous Year Question Papers Class 10.
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