A sociologist is investigating the relationship between educational level, high school, bachelor's, master's, and doctorate, and annual income.
How should this study be classified?
A. Categorical#categorical
B. Quantitative#quantitative
C. Quantitative#categorical
D. Categorical#quantitative
正解:D
解説: (Pass4Test メンバーにのみ表示されます)
質問 2:
Sample mean = 60; point estimate of population mean = ?
A. Unknown
B. 0
C. 50
D. 60
正解:D
解説: (Pass4Test メンバーにのみ表示されます)
質問 3:
Dataset: 3, 5, 7, 9, 11. Median = ?
A. 5
B. 9
C. 6
D. 7
正解:D
解説: (Pass4Test メンバーにのみ表示されます)
質問 4:
The table shows the results of a survey of favorite movie genres.

What is the probability of selecting an action and then a comedy respondent if the selection is replaced?
A. 75%
B. 68%
C. 10.5%
D. 12.5%
正解:C
解説: (Pass4Test メンバーにのみ表示されます)
質問 5:
A child's parents want to analyze the relationship between the daily high temperature and ice cream sales at their child's ice cream stand. They create the following scatterplot.

What is the estimated value of r, the correlation coefficient, between these variables?
A. #0.39
B. #0.93
C. 0.39
D. 0.93
正解:D
解説: (Pass4Test メンバーにのみ表示されます)
質問 6:
In a game, a coin is tossed, and a spinner with 8 equal spaces numbered 1 through 8 is spun.
What is the probability of getting heads on the coin and a number less than 3 on the spinner?
A. 3/8
B. 1/8
C. 1/2
D. 1/4
正解:B
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Anno -
PCでもスマホでも出来るようなので、このApplied-Probability-and-Statisticsテキストもやる気がわいてくるような気がします。