Warm up: 1/21/20

This data is normally distributed.  What percent of the data is in the shaded region?

• 68%
• 95%
• 99.7%
• 50%

What is the standard deviation for the data given:
5, 10, 7, 12, 0, 20, 15, 22, 8, 2

• 6.89
• 10.1
• 7.26
• 9

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

• 193
• 127
• 60
• 66

Tags

CCSS.6.NS.B.3

What is the Normal Range of the monthly salary of teachers if the average is $4,000.00 with a standard deviation of 3,000?

• 1000-7000
• 3000-4000
• 1000-4000
• 4000-7000

All of the below sets have the same mean.
Set 1-Standard Deviation=3.1
Set 2-Standard Deviation=4.9
Set 3-Standard Deviation=1.7
Set 4-Standard Deviation=3.2
Which set of data probably has the points closest to the mean?

• 1
• 2
• 3
• 4

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

• 2
• 16
• 4

Describe the histogram:

• Left Skewed
• Symmetrical
• Right Skewed
• Uniform

Tags

CCSS.2.MD.D.9

The display below shows a set of data points.
If several data points between 115 and 130 are removed, what is the effect on the display?

• The data becomes more peaked
• The data becomes less skewed
• The data becomes more skewed
• There is not enough information to determine the effect.

The mean age of sales people in ABC Dept. Store is 30 years with a standard deviation of 6 years. Between which two age limits must at least 75% of the data lie?

• 24 - 36 years

• 18 - 42 years

• 12 - 48 years

• 6 - 54 years

The average of the number of trials it took a sample of mice to learn to traverse a maze was 12. the standard deviation was 2. Using Chebyshev's theorem, find the minimum percentage of of data values that will fall in the range of 4 to 20 trials.

• 75%

• 88.89%

• 93.75%

• 96%

• 97.22%