Throwback Thursday: AP Stat Review

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

μ = 70 , σ = 8 , X = 50 . Find z score

• 2.5
• -2.5
• 5.2
• -5.2

Tags

CCSS.HSS.ID.A.4

If I have a positive z-score, I scored ABOVE or BELOW the mean?

• ABOVE

• BELOW

Tags

CCSS.HSS.ID.A.4

The mean temperature in Glens Falls for the month of February is 23 degrees with a standard deviation of 4.2 degrees. What is the z-score for a temperature of 17 degrees?

• 1

• 1.43

• -1.43

• 11.5

Tags

CCSS.HSS.ID.A.4

Joanne's Z-score is -1.5. What does this mean?

• She didn't take the test yet.

• She scored 1.5 standard deviations below the average.

• She did better than most people.

• No clue

Tags

CCSS.HSS.ID.A.4

What is the correct formula for finding z-scores?

• $z=\frac{x-\mu}{\sigma}$

• $z=\frac{\mu-x}{\sigma}$

• $S_x=\frac{x-\mu}{\sigma}$

Tags

CCSS.HSS.ID.A.4

Which colored curve has the lowest standard deviation?

• Orange
• Red
• Blue
• Green

Tags

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.2

Which colored curve has the lowest mean?

• Orange
• Red
• Blue
• Green

Tags

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.2

If 10 is added to every value in a set of data, what will happen to the value of the standard deviation?

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

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

The 75th percentile is also know as the

• median
• third quartile
• 1st quartile`
• interquartile range

Tags

CCSS.6.SP.A.3

CCSS.6.SP.B.5

CCSS.6.SP.A.2

CCSS.6.SP.B.4