18 7 19 7 25 23\nsend data to excel\nthe population variance for the e - books is.\nthe population standard…

Explanation:

Step1: Calculate the mean

The data set is (18,7,19,7,25,23). The mean (\mu=\frac{18 + 7+19+7+25+23}{6}=\frac{99}{6} = 16.5)

Step2: Calculate the squared - differences

((18 - 16.5)^2=1.5^2 = 2.25), ((7 - 16.5)^2=(-9.5)^2 = 90.25), ((19 - 16.5)^2=2.5^2 = 6.25), ((7 - 16.5)^2=(-9.5)^2 = 90.25), ((25 - 16.5)^2=8.5^2 = 72.25), ((23 - 16.5)^2=6.5^2 = 42.25)

Step3: Calculate the population variance

The population variance (\sigma^{2}=\frac{2.25 + 90.25+6.25+90.25+72.25+42.25}{6}=\frac{303.5}{6}\approx50.583)

Step4: Calculate the population standard deviation

The population standard deviation (\sigma=\sqrt{50.583}\approx7.112)

Answer:

The population variance for the e - books is approximately (50.583). The population standard deviation for the e - books is approximately (7.112).