Questions from Statistics

Q: The scatterplot shows the average teacher pay and high school graduation percentage

The scatterplot shows the average teacher pay and high school graduation percentage rate for each of the 50 states and the District of Columbia. The regression equation is also shown. (Source: 2017 Wo...

Q: Grades on a political science test and the number of hours of

Grades on a political science test and the number of hours of paid work in the week before the test were recorded. The instructor was trying to predict the grade on a test from the hours of work. The...

Q: Data were collected that included information on the weight of the trash

Data were collected that included information on the weight of the trash (in pounds) on the street for one week and the number of people who live in the house. The following figure shows a scatterplot...

Q: Data on the number of home runs, strikeouts, and batting

Data on the number of home runs, strikeouts, and batting averages for a sample of 50 Major League Baseball players were obtained. Regression analyses were conducted on the relationships between home r...

Q: Data on the 3-point percentage, field-goal percentage

Data on the 3-point percentage, field-goal percentage, and free-throw percentage for a sample of 50 professional basketball players were obtained. Regression analyses were conducted on the relationshi...

Q: Suppose you wanted to know whether living situation was associated with number

Suppose you wanted to know whether living situation was associated with number of units the student had acquired. Could you do that with this data table? If so, which variables would you use?

Q: Data from the National Data shown in the table are the 4th

Data from the National Data shown in the table are the 4th-grade reading and math scores for a sample of states from the National Assessment of Educational Progress. The scores represent the percentag...

Q: The following table shows the average SAT Math and Critical Reading scores

The following table shows the average SAT Math and Critical Reading scores for students in a sample of states. A scatterplot for these two variables suggests a linear trend. (Source: qsleap.com) a. F...

Q: Assume that in a political science class, the teacher gives a

Assume that in a political science class, the teacher gives a midterm exam and a final exam. Assume that the association between midterm and final scores is linear. The summary statistics have been si...

Q: Assume that in a sociology class, the teacher gives a midterm

Assume that in a sociology class, the teacher gives a midterm exam and a final exam. Assume that the association between midterm and final scores is linear. Here are the summary statistics: a. Find a...