stats review of z-score

Calculate the z score for a score of 90 if the mean is 75 and the standard deviation is 4.5.

• -3.33

• 3.33

• 1.77

• 2.1

Tags

CCSS.HSS.ID.A.4

Using a z-score table. Fernando is 60 inches tall. The average height for his age and gender is 68 with a standard deviation of 10 inches. What percent of his peers are shorter than him?

• 46.81%
• 8%
• 78.81%
• 21.19%

Tags

CCSS.HSS.ID.A.4

Between what two standard deviations of a normal distribution contain 68% of the data?

• one below and one above
• two below and two above
• two below and zero
• zero and two above

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

• 68%
• 95%
• 99.7%
• 50%

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

• 68%
• 95%
• 99.7%
• 50%

The normal curve is symmetrical about the mean.

• True
• False

Find the median.
12, 5, 9, 18, 22, 25, 5

• 9
• 8
• 12
• 18

Tags

CCSS.7.SP.B.4

Find the range.
12, 5, 9, 18, 22, 25, 5

• 20
• 15
• 22
• 18

Tags

CCSS.6.NS.C.7

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

The number of miles that Jenna cycled each week for a 7-week period is shown: 
36, 42, 28, 52, 48, 36, 31 
What is the median number of miles Jenna cycled?

• 24
• 36
• 39
• 52

Tags

CCSS.6.SP.B.5C

How do you find mean?

• Add up all the #s and divide by the amount of #s in the set
• Most common #
• Biggest # - Smallest #
• Middle # when ordered from least to greatest

Tags

CCSS.6.SP.B.5C