Quiz 7.5 - 7.7

Using the standard deviation, find the outlier in the data set below.

5.3, 0.1, 6.7, 4.1, 6.1, 4.2, 4.3, 4.5

• 0.1

• 6.7

• 5.3

• 4.3

• There are no outliers.

You keep track of the prom tickets you sell everyday. Within how many standard deviations of the mean do all the data values fall?

161, 87, 74, 69, 89, 146, 129, 111, 71, 130, 116, 76

• 4

• 1

• 3

• 2

*Hint: To get variance, just square the standard deviation.

• A.

• B.

• C.

• D.

What percentage of the data falls within 2 standard deviations of the mean?

58, 77, 31, 54, 58, 54, 56, 58, 56

• 100%

• 88.89%

• 77.78%

• 66.67%

Tags

CCSS.HSS.ID.A.4

What is the interquartile range? Type only a number in your answer.

Tags

CCSS.6.SP.B.5C

What is the population standard deviation? Round your answer to the nearest hundredth.

Let's say you put the following numbers in the stats list in your calculator: 52, 37, 41, 15, 62, 13.

What would be the value of "n" in your calculator output?

Tags

CCSS.6.SP.B.5A

Describe the shape of the data below:

14, 22, 36, 21, 11, 32, 18

• The data is exactly symmetric.

• The data is extremely skewed.

• The data is only slightly skewed.

Describe the spread of the data below:

14, 59, 36, 72, 11, 32, 21

• The data is very spread out. I know this because the sample standard deviation is very large.

• The data is very spread out. I know this because the sample standard deviation is very small.

• The data is very clustered. I know this because the sample standard deviation is very large.

• The data is very clustered. I know this because the sample standard deviation is very small.

Tags

CCSS.6.SP.A.3

Find the median of this data set.

• 33

• 25.72

• 28

• 26

Tags

CCSS.6.SP.B.5C