Variance and Standard Deviation

Four data sets are shown below.

Data 1: {10, 19, 38, 50, 51}

Data 2: {5, 21, 26, 39, 51}

Data 3: {9, 38, 50, 50, 51}

Data 4: {5, 28, 28, 28, 51}

Which data set has the largest standard deviation?

(a)  

Ervin bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the sample standard deviation of Ervin's scores?

(a)  

In a population of five university students with GPAs of

2.5, 2.3, 1.7, 1.4, and 1.1,

a sample of three students are considered. What would be the standard deviation of the resulting sampling distribution?

(a)  

What is the variance for the data given:

5, 10, 7, 12, 0, 20, 15, 22, 8, 2

(a)  

What is the standard deviation for the data given:

5, 10, 7, 12, 0, 20, 15, 22, 8, 2

(a)  

If the standard deviation of a data set is 4, what is the variance?

(a)  

What is the standard deviation for the data given:

{12, 13, 29, 18, 61, 35, 21}

(a)  

Given a variance of 64, what is the standard deviation?

(a)  

What is the standard deviation for the data given:

5, 10, 7, 12, 0, 20, 15, 22, 8, 2

(a)  

The term "snowstorms of note" applies to all snowfalls over 6 inches. The snowfall amounts for

snowstorms of note in Utica, New York, over a four-year period are as follows: 7.1, 9.2, 8.0, 6.1,

14.4, 8.5, 6.1, 6.8, 7.7, 21.5, 6.7, 9.0, 8.4, 7.0, 11.5, 14.1, 9.5, 8.6

What is the population standard deviation for these data, to the nearest hundredth?

(a)