Normal Distribution and Z scores Hybrid Class #2

A positive standardized score represents

• An observed value at the mean

• An observed value above the mean

• One standard deviation

• Two standard deviations

Tags

CCSS.HSS.ID.A.4

According to the Empirical Rule

• 34% of the values fall within 3 standard deviations above and below the mean

• 34% of the values fall within one standard deviation above and below the mean

• 68% of the values fall within a positive 1 standard deviation

• 68% of the values fall within one standard deviation above and below the mean

Tags

CCSS.HSS.ID.A.4

Measurements in a bell-shaped curve

• Are evenly divided throughout the curve

• Are mostly positive

• Are clustered around the mean

• Are mostly negative

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.4

A z score

• Is a standardized score for an observed value

• Is a raw score

• Is always the mean

• Is always the median

Tags

CCSS.HSS.ID.A.4

A z score table

• Provides the mean for a given z score

• Provides the standard deviation for a given z score

• Provides the area associated with a z score

The area on the z table associated with one standard deviation above the mean is

• .3413

• .6826

• .0000

• .9515

Tags

CCSS.HSS.ID.A.4

A negative z score is located

• Below the mean

• At the mean

• Above the mean

Tags

CCSS.HSS.ID.A.4

A positive z score is located

• At the mean

• Above the mean

• Below the mean

Tags

CCSS.HSS.ID.A.4

Which of the following gives the most information about a score in relation to the overall population?

• Raw score

• z score

• Mean

Tags

CCSS.HSS.ID.A.4

CCSS.HSS.MD.A.2

The z score provides

• Information about how many standard deviations the score is from the mean

• The highest score

• The lowest score

• The mode

Tags

CCSS.HSS.ID.A.4