Friday 12/11: Test Measures of Center and Probability

The table above shows the number of cell phones per household in a small town. Find the probability of that a randomly selected household will have at least 4 cellphones.

• A. 0.292

• C. 0.84

• B. 0.276

• D. 0.168

The following values were recorded. How does excluding the outlier affect the mean of these values?

100, 150, 200, 175, 125, 600, 250

• A. Excluding the outlier increased the mean by 73

• C. Excluding the outlier increased the mean by 62

• B. Excluding the outlier decreased the mean by 73

• D. Excluding the outlier decreased the mean by 62

A Math teacher has recorded the scores of a recent quiz worth 50 possible points.

0,0,16,18,19,25,25,27,28,28,37,38,40,45,45,47,48,50,50,50

If the teacher wants to represent the results as positively as possible, which measure of central tendency should be used?

• A. The mean

• B. The median

• C. The mode

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

A teacher has recorded the scores of a recent test.

10 62 75 88 90 92 95 98 98 100

How does excluding the outlier affect the mean of these test scores?

• Excluding the outlier increases the mean by 10.

• Excluding the outlier increases the mean by 8.

• Excluding the outlier decreased the mean by 10.

• Excluding the outlier decreased the mean by 8.

Which interval has 4 students?

• 56-59
• 60-63
• 60-67
• 48-51

Tags

CCSS.2.MD.D.9

What is the shape of the distribution?

• Skewed Left 
• Skewed Right
• Symmetric
• Bimodal

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.A.1

What is the range of the data shown?

• 85
• 90
• 80
• 70

Tags

CCSS.3.MD.B.4

How many students were greater than 55 inches tall but less than 70 inches tall?

• 13
• 15
• 16
• 17

Tags

CCSS.2.MD.D.9

The histogram shows the birth weights of 100 new born babies.  How many babies weighed 8 pounds or more?

• 22
• 23
• 30
• 45

Tags

CCSS.2.MD.D.9

What is the shape of the distribution?

• Skewed Left

• Skewed Right

• Symmetric

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.B.4