Statistics- I think I have the answer

posted by .

The salaries (in thousands of dollars) for a sample of 13 employees of a firm are: 26.5, 23.5, 29.7, 24.8, 21.1, 24.3, 20.4, 22.7, 27.2, 23.7, 24.1, 24.8, and 28.2.

Compute the variance of the salaries.

a)2.562
b)6.125 - I Picked this
c)9.223
d)7.097

• Statistics- I think I have the answer -

Your pick is incorrect. It's either c) or d). Remember that standard deviation is the square root of the variance, and variance is standard deviation squared.

Similar Questions

1. Stats

Make a boxplot of the salaries. To the right is a stem-and-leaf plot of the salaries for the 2006 New York Yankees. The stems are millions of dollars; the leaves are hundreds of thousands. For example, the "5|4" represents the 5.4 …
2. Statistics

Sample salaries (in dollars) of high school teachers are listed. Find the sample mean and standard deviation of the data. 49,632 54,619 58,298 48,250 51,842 50,875 43,219 49,924
3. statistics

One hundred employees working in the construction, manufacturing, and various other industries were selected for review of salary information and educational level. The salaries of the one hundred employees were reviewed to determine …
4. statistics

The distribution of weekly salaries at a large company is right skewed with a mean of \$1000 and a standard deviation of \$350. What is the probability that the sampling error made in estimating the mean weekly salary for all employees …
5. Statistics

The monthly incomes from a random sample of workers in a factory are shown below. Monthly Income (In \$1,000) 4.0 5.0 7.0 4.0 6.0 6.0 7.0 9.0 a. Compute the standard error of the mean (in dollars). b. Compute the margin of error (in …
6. statistics

A company director took a sample of salaries of 13 employees in a big school during a certain time. she divided the wages into three groups according to the different jobs: teachers, assistants and coordinators as displayed in the …
7. statistics

Wages and salaries make up only part of a total compensation. Other parts include paid leave, health insurance, and many others. In 2007, wages and salaries among manufacturers in the United States made up an average of 65.8% of total …
8. Statistics

The distribution of weekly salaries at a large company is reverse J-shaped with a mean of \$1000 and a standard deviation of \$370. What is the probability that the sampling error made in estimating the mean weekly salary for all employees …
9. Math

the mean hourly wage of employees at his company using the data in the table. In a report he stated, “The typical salary at the company is about \$23.00 per hour.” How is this misleading?
10. Statistics

The monthly salaries (in thousands of dollars) of a sample of sales representatives are as follows: 13, 7, 10, 9, 8, 13 Find the standard deviation of this sample of monthly salaries. Round your answer to at least two decimal places.

More Similar Questions