Introduction to Normal Distributions

Which distribution has the smallest standard deviation?

• red

• yellow

• green

• blue

• they are all the same

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CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.2

Which distribution has the largest standard deviation?

• red

• yellow

• green

• blue

• they are all the same

Tags

CCSS.HSS.ID.A.3

Which distributions have the same mean? Check all that apply.

• red

• yellow

• green

• blue

• none of them have the same mean

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CCSS.HSS.ID.A.2

The area under a normal curve ...

• is always negative

• is equal to 1

• varies depending on the data

• goes on for infinity

The normal curve is symmetrical about the mean.

• True

• False

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CCSS.HSS.ID.A.4

The equation of the line of symmetry for the normal curve is:

• x = 177

• x = 0

• x = 4

• x = ∞

The graph shows the scores of a standardized test, normally distributed, for two classes.

What class has the highest mean?

• Class A

• Class B

• Class A and Class B have the same mean

Tags

CCSS.HSS.ID.A.3

The graph shows the scores of a standardized test, normally distributed, for two classes.

What class has the largest standard deviation?

• Class A

• Class B

• Class A and Class B have the same mean

What shape is a normal distribution curve?

• Half curve
• Round curve
• Bell curve
• Square curve

Tags

CCSS.HSS.ID.A.3

The mean (µ) describes the spread of the data in a normal curve.

• True

• False

Tags

CCSS.6.SP.A.3