Question

Find the mean of the data summarized in the given frequency distribution. Compare the computed mean to the actual mean of

51.3

miles per hour.

Speed (miles per hour)	42minus−45	46minus−49	50minus−53	54minus−57	58minus−61
Frequency	23	12	66	44	22

The mean of the frequency distribution is___miles per hour.

(Round to the nearest tenth as needed.)

Which of the following best describes the relationship between the computed mean and the actual mean?

A.The computed mean is not is not close to the actual mean because the difference between the means is less than 5%.

B.The computed mean is close to the actual mean because the difference between the means is less than 5%.

C.The computed mean is close to the actual mean because the difference between the means is more than 5%.

D.The computed mean is not close to the actual mean because the difference between the means is more than 5%

Answer 1

((Computed mean - actual mean )/actual mean ) *100 this give the difference between the means.