What are the career options in the field of Statistics? No. This particular bar graph in Figure \(\PageIndex{4}\) can be difficult to understand visually. By using simple random sampling, select states to be part of the cluster. Experts are tested by Chegg as specialists in their subject area. The data are the number of machines in a gym. Each undergraduate student in the fall semester has the same probability of being chosen at any stage of the sampling process. The registrar at State University keeps records of the number of credit hours students complete each semester. OC. To choose a stratified sample, divide the population into groups called strata and then take a proportionate number from each stratum. B. LBCC Distance Learning (DL) program data in 2010-2011. lastbaldeagle. What type of data is this? Be aware that many large samples are biased. In this article, we have discussed the data types and their differences. In this situation, create a bar graph and not a pie chart. To find the average annual income of all adults in the United States, sample U.S. congressmen. It can be the version of an android phone, the height of a person, the length of an object, etc. Any group of n individuals is equally likely to be chosen by any other group of n individuals if the simple random sampling technique is used. For this example, suppose Lisa chooses to generate random numbers from a calculator. the data can only take on specific values . The chart in Figure \(\PageIndex{6}\) is organized by the size of each wedge, which makes it a more visually informative graph than the unsorted, alphabetical graph in Figure \(\PageIndex{6}\). Data that can only take on certain values are discrete data. A random number generator is used to select a student from the alphabetical listing of all undergraduate students in the Fall semester. Quantitative data can be used for statistical manipulation. B. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. state whether the data is continous or discrete The durations of Indicate whether quantitative data are continuous or discrete. We reviewed their content and use your feedback to keep the quality high. Then choose every fiftieth name thereafter until you have a total of 400 names (you might have to go back to the beginning of your phone list). A. Other well-known random sampling methods are the stratified sample, the cluster sample, and the systematic sample. Besides simple random sampling, there are other forms of sampling that involve a chance process for getting the sample. The three cans of soup, two packages of nuts, four kinds of vegetables and two desserts are quantitative discrete data because you count them. Divide 84 a money box contains 1 coins, 2 coins, 5 coins and 10 coins 10 coins is four times the number of 1 coins. discrete because the data can only. Data is classified into 4 types. There are many different potential problems that can affect the reliability of a sample. This table displays six sets of quiz scores (each quiz counts 10 points) for an elementary statistics class. These data cant be broken into decimal or fraction values. The number of animals in a zoo is continuous data because the number of animals varies yearly depending on the reproduction of new animals or the arrival of new animals. Again, you sample the same five students. The two-digit number 14 corresponds to Macierz, 05 corresponds to Cuningham, and 04 corresponds to Cuarismo. Starting with that student, every 50th student is chosen until 75 students are included in the sample. Quantitative data, on the other hand, is one that contains numerical values and uses a scope. However, students shall understand that it is important for them to recognize their interests and based on that, select the best career path possible. The data are continuous because the data can only take on specific values. State whether the data described below are discrete or - JustAnswer Doreen's sample will be different from Jung's sample. Problems with samples: A sample must be representative of the population. B. If she needed to, Lisa could have generated more random numbers. The road from A to E and the road from C and D are perpendicular and intersect at point F. Theresa's house is at C, 500 feet from the intersection. The data are continuous because the data can only take on specific values. O A. The volumes left parenthesis in cubic feet right parenthesis of different rooms Choose the correct answer below. Height is continuous but we sometimes don't really worry too much about minor variations and club heights into a set of discrete data instead. The data are continuous because the data can only take on specific values. categorical, quantitative discrete or quantitative continuous. All data that are the result of counting are called quantitative discrete data. The data are continuous because the data can take Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. Hint: Data that are discrete often start with the words "the number of.". This is important to know when we think about what the data are telling us. 4. The data will be quantitative, say 2+3 (=5) apples. What type of data is this? Data is the new oil. Today data is everywhere in every field. O A. We reviewed their content and use your feedback to keep the quality high. Instead, we use a sample of the population. For instance, hair color might be black, dark brown, light brown, blonde, gray, or red. The second sample is a group of senior citizens who are, more than likely, taking courses for health and interest. according to measurement accuracy, it can be significantly subdivided into smaller sections. There are no strict rules concerning which graphs to use. The examples you have seen in this book so far have been small. the number of data values is increased), their sample results (the average amount of time a student sleeps) might be closer to the actual population average. For example, you could stratify (group) your college population by department and then choose a proportionate simple random sample from each stratum (each department) to get a stratified random sample. The data are the number of books students carry in their backpacks. Statistical data needs to be critically analyzed, not simply accepted. The numbers of hotels in cities Choose the correct answer below. You sample five houses. The data . Determine the type of sampling used (simple random, stratified, systematic, cluster, or convenience). It is not possible to measure qualitative data in terms of numbers and it is subdivided into nominal and ordinal data. 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. State whether the data described below are discrete or continuous, and explain why. on any value in an interval . For the purpose of analysis, data are presented as the facts and figures collected together. 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. Misleading use of data: improperly displayed graphs, incomplete data, or lack of context. For example, suppose you have to do a phone survey. 1: 23-54 (2012), ssh.dukejournals.org/content/36/1/23.abstract (accessed May 1, 2013). Another example is learning how to use calculators. O C. Weights are quantitative continuous data because weights are measured. One student has a red backpack, two students have black backpacks, one student has a green backpack, and one student has a gray backpack. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. The durations of a chemical reaction comma repeated . Your instructor will give each group one six-sided die. (a) Is the data discrete or continuous? Why? (b) Prepare a freq | Filo Asking all 10,000 students is an almost impossible task. The data are continuous because The exact lengths (in kilometers) of the ocean coastlines of different countries is a continuous variable because it can take on any value in an interval. The data are discrete because the data can take on any value in an interval. Try to identify additional data sets in this example. 26. Solved State whether the data described below are discrete - Chegg This is completely natural. You will learn why when you study confidence intervals. A study is done to determine the average tuition that San Jose State undergraduate students pay per semester. Different types of data are used in research, analysis, statistical analysis, data visualization, and data science. It is easy in many cases, discrete data is preceded by the number of, which makes the differentiation of results easier. Look at Figures \(\PageIndex{3}\) and \(\PageIndex{4}\) and determine which graph (pie or bar) you think displays the comparisons better. They spend: $50; $40; $36; $15; $50; $100; $40; $53; $22; $22. feet, 160 sq. ), Education Level (Higher, Secondary, Primary), Total numbers of students present in a class, The total number of players who participated in a competition. Determine whether the data described below are qualitative or quantitative and explain why: . Data may come from a population or from a sample. Every value within a range is included in continuous data. The data are continuous because the data can take on any value in an interval. 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. Press ENTER 2 more times (even the repeats). In reality, a sample will never be exactly representative of the population so there will always be some sampling error. Students often ask if it is "good enough" to take a sample, instead of surveying the entire population. The freshman, sophomore, junior, and senior years are numbered one, two, three, and four, respectively. If all the money in the 555, find the number of 10 coins in it 12. On Tax Day, House to Call for Firing Federal Workers Who Owe Back Taxes. a. For example, 16-ounce cans of beverage may contain more or less than 16 ounces of liquid. b. Be aware that as you take data, your data may vary somewhat from the data someone else is taking for the same purpose. The safest route is to avoid the closest pair of islands. It is classified into two broad categories: qualitative data and quantitative data. Ordinal data have natural ordering where a number is present in some kind of order by their position on the scale. 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status page at https://status.libretexts.org, Students who intend to transfer to a 4-year educational institution. If there is a repeat press ENTER again. There are several actions that could trigger this block including submitting a certain word or phrase, a SQL command or malformed data. Variation is present in any set of data. Points in a graph of the discrete function remain unconnected. Over time, some continuous data can change. Solved State whether the data described below are discrete - Chegg D. The A. Sampling without replacement instead of sampling with replacement becomes a mathematical issue only when the population is small. Legal. For column 1, Press 5:randInt( and enter 1,10). This pie chart shows the students in each year, which is qualitative data. Number of bacteria in a petri dish is 12,120. Working on data is crucial because we need to figure out what kind of data it is and how to use it to get valuable output out of it. Press ENTER. Doreen uses systematic sampling and Jung uses cluster sampling. A sample of 100 undergraduate San Jose State students is taken by organizing the students names by classification (freshman, sophomore, junior, or senior), and then selecting 25 students from each.