Pretest

Question 1

Which is the mode of the income in the sample tax data?

Revolt · Accepted Answer

no mode

Question 2

What is the median of the tax refunds in the sample tax data? Enter your answer in the box.

Revolt · Accepted Answer

815

Question 3

What is the standard deviation of the incomes in the sample tax data? Round your answer to the nearest whole number. Enter your answer in the box.

Revolt · Accepted Answer

21466

Question 4

What is the mean of the tax refunds in the sample tax data?

Revolt · Accepted Answer

868 dollars

Question 5

What is the median income of the sample tax data?

Revolt · Accepted Answer

80 dollars comma 790

Question 6

If the income of ID003 (originally $⁢114,950 ) was entered incorrectly and should be $⁢100,000 , what would be the new mean income? Enter your answer in the box.

Revolt · Accepted Answer

77012

Question 7

What is the mean income of the sample tax data?

Revolt · Accepted Answer

78 dollars comma 507

Question 8

What is the variance of the incomes in the sample tax data? Round your answer to the nearest whole number. Enter your answer in the box.

Revolt · Accepted Answer

511990534

Question 9

What is the range of the incomes in the sample tax data?

Revolt · Accepted Answer

67 dollars comma 570

Question 10

A tax policy researcher examines the distribution of household incomes and observes it is highly skewed to the left. Which statement best describes the characteristics of this distribution?

Revolt · Accepted Answer

The median is greater than the mean.

Pretest Answers

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