MATH 225N Week 1 Assignment: Variables and Measures of Data Questions and Answers.

MATH 225N Week 1 Assignment: Variables and Measures of Data Questions and Answers. 1. Which of the following best describes the term explanatory variable? ________________________________________ Select the correct answer below: ________________________________________ the dependent variable in an experiment a value or component of the independent variable applied in an experiment a variable that has an effect on a study even though it is neither an independent nor a dependent variable the independent variable in an experiment 2. Which of the following best describes the term qualitative? ________________________________________ Select the correct answer below: ________________________________________ a numerical characteristic of the sample the type of data that is the result of measuring the type of data that is the result of counting an attribute whose value is indicated by a label 3. A zoologist measures the birthweight of each cub in a litter of lions. What is the level of measurement of the data? ________________________________________ Select the correct answer below: ________________________________________ nominal ordinal interval ratio 4. Margaret is investigating if gender has any effect on political party associations. What is the response variable? ________________________________________ Select the correct answer below: ________________________________________ political party associations gender the number of people that are being studied none of the above 5. Timothy is collecting data on number of dental cavities. What type of data is this? ________________________________________ Select the correct answer below: ________________________________________ qualitative data discrete quantitative data continuous quantitative data none of the above 6. To determine whether or not number of siblings influences grade point average, Charles has designed a survey. What is the explanatory variable? ________________________________________ Select the correct answer below: ________________________________________ number of siblings grade point average the number of people surveyed none of the above 7. What is the type of quantitative data that is the result of measuring? ________________________________________ Select the correct answer below: ________________________________________ qualitative statistic discrete continuous