You're interested in the glasses of water people drink each day and sample 20 people. The mean of this is 6.3. What is this an example of? Inferential and qualitative Descriptive and quantitative Descriptive and qualitative Inferential and quantitative
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A sample of 50 cities and create a bar chart showing the population of each. This is an example of: inferential statistics, nominal data, descriptive statistics, qualitative data
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Introduction to statistics Determine whether the statement below is an example of descriptive or inferential statistics. There is a 40% probability that it will rain today. Question 1 options: Descriptive statistics Inferential statistics Question 2 Determine whether the statement below is an example of descriptive or inferential statistics. During the Memorial Day weekend, 20 people were killed in car accidents in Washington, D.C. Question 2 options: Descriptive statistics Inferential statistics Question 3 Classify the variable below as qualitative, discrete, or continuous. The speed of cars on a given road Question 3 options: Qualitative Discrete Continuous Question 4 Classify the variable below as qualitative, discrete, or continuous. Letter grade in an English class (A, B, C, D, F) Question 4 options: Qualitative Discrete Continuous Question 5 Give the boundaries, including units, for the data value below. 66.717 feet Question 5 options: 66.716 - 66.717 feet Question 6 Give the boundaries, including units, for the data value below. 0.19 pounds Question 6 options: 0.18 - 0.19 pounds Question 7 Classify the variable below as nominal, ordinal, interval, or ratio level. The major field of study of students. Question 7 options: Nominal Question 8 Classify the variable below as nominal, ordinal, interval, or ratio level. Number of online purchases made in a month Question 8 options: Ratio level Question 9 Classify the variable below as nominal, ordinal, interval, or ratio level. Letter grade in an English class (A, B, C, D, F) Question 9 options: Ordinal Question 10 Classify the following as a random, systematic, stratified, or cluster sampling. A researcher selects 4 of 12 high schools in a certain region and surveys all of the administrative staff members in each school about a potential change in the ordering of supplies. Question 10 options: Cluster Question 11 Classify the following as a random, systematic, stratified, or cluster sampling. A utility company sends surveys to 200 of its customers in such a way that 100 surveys are sent to customers who pay their bills on time, 50 surveys are sent to customers whose bills are less than 30 days late, and 50 surveys are sent to customers whose bills are more than 30 days late. Question 11 options: Stratified Question 12 Classify the following as a random, systematic, stratified, or cluster sampling. The winning numbers for the Colorado Lottery Lotto game are chosen by selecting six balls from a collection of balls numbered from 1 to 42. Question 12 options: Random Question 13 Classify the following as a random, systematic, stratified, or cluster sampling. Every hundredth hamburger manufactured is checked to determine its fat content. Question 13 options: Systematic Question 14 A Parks Department employee wants to know if latex paint is more durable than non-latex paint. She has 50 park benches painted with latex paint and has 50 park benches painted with non-latex paint. She then recorded the time in months before wear required each bench to be repainted. Question 14 options: Experimental Question 15 Identify the study described below as being either observational or experimental. A teacher of an 8:00am class had students record the number of hours they slept each night. She then compared the grades of those who averaged less than seven hours of sleep to the grades of those who averaged more than seven hours of sleep each night. Question 15 options: Observational
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1) The ordinal level of measurement is considered the "lowest" level of measurement. 2) The terms descriptive statistics and inferential statistics can be used interchangeably. 3) A marketing research agency was hired to test a new DVD player. Consumers rated it outstanding, very good, fair, or poor. The level of measurement for this experiment is ordinal. 4) If we select 100 persons from 25,000 registered voters and question them about candidates and issues, the 100 persons are referred to as the population. 5) A frequency table for qualitative data has class limits. 6) In a bar chart, the horizontal axis is usually labeled with the values of a qualitative variable. 7) A pie chart shows the relative frequency in each class. 8) A frequency polygon is a very useful graphic technique when comparing two or more distributions. 9) Variation describes the degree of dispersion in the data. 10) For any distribution, there is an equal number of values above and below the mean.
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