3/31/23 Statistics & Standard Deviation Quiz

What is the standard deviation for the data given:
{12, 13, 29, 18, 61, 35, 21}

• 293.67
• 15.87
• 17.14
• 41.98

Find the mean of these numbers:
5,11,2,12,4,2

• 4.1
• 6
• 4.5
• 4

What is the mean?

• # happening the most
• the number in the middle
• biggest-smallest
• the average

To find the _________ you add up all the numbers and then divide by how many numbers you have.

• Mean
• Median
• Mode
• Range

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?

• 511.33

• 22.61

• 438.48

• 20.94

Which class has the higher median?

• 1st period

• 2nd period

• They have the same median

What does the standard deviation tell us about the data set?

• How spread out the numbers are

• How much each number in the data set increases by

• How much each number in the data set decreases by

What is the range?

• average
• biggest-smallest
• the middle #
• # happening the most

What is the median test score on the 6TH Grade Math Test?

• 78

• 85

• 93

• 97

What is the the third quartile for the data on the 6TH Grade Math Test?

• 68

• 78

• 85

• 93