**Question**

The following dataset represents the salaries for ** all **six employees at a small start-up company.

Find the mean, variance, and standard deviation for this dataset of salaries (expressed in thousands of dollars):

55, 59, 63, 67, 71, 75

(Round your answers to one decimal place)

**Question**

Which of the data sets represented by the following histograms has the smallest standard deviation?

**Question**

A company is interested to know the variation in yearly sales amount for all 5 salespeople in the company.

The dataset shown below is the sales amount sold by the 5 salespeople in the company (expressed in thousands of dollars):

40,60,65,70,80

Find the variance for this dataset.

**Question**

Which of the data sets represented by the following histograms has the smallest standard deviation?

**Question**

Which of the following lists of data has the smallest standard deviation?

17, 19, 17. 18, 17, 16, 16, 16. 17, 20

**Question**

Which of the following lists of data has the largest standard deviation?

24, 15, 21, 23, 9, 22, 12, 21, 20, 13

**Question**

A large company is interested to know the variation in yearly sales for its salespeople. The dataset shown below is the yearly sales for a sample of 5 salespeople (expressed in thousands of dollars):

40, 60, 65, 70, 80

Find the variance for this dataset.

- Round the final answer to the nearest whole number.

**Question**

The following data values represent the daily amount spent by a family during a 7 day summer vacation.

Find the population standard deviation of this dataset:

$96, $125, $80, $110, $75, $100, $121

(Round your answer to 1 decimal place).

# Solution:

The following dataset represents the salaries for ** all **six employees at a small start-up company.

Find the mean, variance, and standard deviation for this dataset of salaries (expressed in thousands of dollars):

55, 59, 63, 67, 71, 75

(Round your answers to one decimal place)

**Answer**: Mean = 65.0, Standard Deviation = 6.8, Variance = 46.7

Which of the data sets represented by the following histograms has the smallest standard deviation?…**Please click the icon below to download the solution at $5**