Which of the following is/are appropriate displays for the distribution of salar

Question

Which of the following is/are appropriate displays for the distribution of salaries at a small company with 75 employees?

I. Bar Graph
II. Histogram
III. Stem-and-leaf Plot

I only

II only

I and II only

II and III only

I, II and III

A quantitative variable has 10 observations that have a median value of 22 and a mean value of 25. The minimum of the 10 observations was recorded incorrectly and is changed from a value of 5 to a value of 3.

Choose the correct statement below.

The mean and median values will both stay the same.

The mean value will change, but the median value will stay the same.

The median value will change, but the mean value will stay the same.

The mean and median values will both change.

I only

II only

I and II only

II and III only

I, II and III

Explanation / Answer

Hisotgram will be most appropriate becuase we can divide the employee in salary interval. So option b is correct.

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Since minimum value has been changed so median will be remain same. But as minimum value 5 is decreased by 2 so sum will also decreased by 2. So mean will be changed. Hence, option (b) is correct.

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