AP Statistics- Spring Midterm Review

If a number is added to a set that is far away from the mean, how does this affect standard deviation?

• increase
• decrease
• stay the same
• both increase and decrease

Tags

CCSS.HSS.ID.A.3

The mean life of a tire is 30,000 km. The standard deviation is 2000 km.

Then, 68% of all tires will have a life between ___________ km and __________ km.

•  28,000 km and 32,000 km.
• 24,000 km and 34,000 km.
• 26,000 km and 34,000 km.
• 27,000 km and 31,000 km.

Tags

CCSS.HSS.ID.A.4

The distances male long jumpers for State College jump are approximately normal with a mean of 263 inches and a standard deviation of 14 inches.  
Suppose a male long jumper's jump ranked in the 75th percentile.  How long was his jump?

• 0.67 inch
• 263 inches
• 272.44 inches
• 277.25 inches

Tags

CCSS.HSF-LE.A.1B

The z-score represents.....

• the amount of standard deviations a data value is above or below the mean.
• the percentile the data value is above or below the mean.
• the amount of standard deviations a data value is above or below the median.
• the percent the data value is above or below the mean.

Tags

CCSS.HSS.ID.A.4

If the p-value is less than α, we reject H₀

• True
• False

What is the formula name?

• mean of sample

• standard deviation of sample

• mean of population

• standard deviation of population

Tags

CCSS.6.SP.B.5C

Describe the histogram:

• Left Skewed
• Symmetrical
• Right Skewed
• Uniform

Tags

CCSS.6.SP.B.4

CCSS.6.SP.B.5

CCSS.6.SP.A.2

What is the median of the Stem-and-Leaf Plot?

• 43.5
• 42
• 45
• 44.5

Tags

CCSS.6.SP.B.5

CCSS.6.SP.A.3

CCSS.6.SP.A.2

Rhaul measured the heights of the apple trees in an orchard. What percent of the trees are 5-9 feet tall?

• 18.9%
• 31%
• 22.1%
• 10%

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1

What is the percentage of days that had 106 or more lunches served?

• 43%
• 45%
• 50%
• 47%

Tags

CCSS.6.SP.B.4

CCSS.HSS.ID.A.1