Question

{Exercise 3.57 (Algorithmic)} The following frequency distribution shows the price per share for a sample of 30 companies listed on the New York Stock Exchange. Price per Share                         Frequency

$20-29                         6

$30-39                         4

$40-49                         5

$50-59                         3

$60-69                         2

$70-79                         3

$80-89                         7

Compute the sample mean price per share and the sample standard deviation of the price per share for the New York Stock Exchange companies (to 2 decimals). Assume there are no price per shares between 29 and 30, 39 and 40, etc.

Sample mean=

Sample standard deviation=

Answer 1

Solution:

Mean = 53.833

Standard Deviation = 22.884