Normal distribution( GCSE)

What shape is a normal distribution curve?

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

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CCSS.HSS.ID.A.3

Find the area of the shaded region.

• 16%

• 84%

• 68%

• 34%

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CCSS.HSS.ID.A.4

What percent of a normal distribution lies outside of ±3 standard deviations?

• 99.7%

• .15%

• .3%

• 100%

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CCSS.HSS.ID.A.4

Where can we locate the mean in the normal curve?

• to the left portion

• to the right portion

• at the center

• on the z - axis

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CCSS.HSS.ID.A.4

Adam's standard deviation on a test is +2.5. What does this mean?

• He'd better start studying.

• He did better than EVERYONE.

• He scored 2.5 standard deviations above the average.

• He did terrible.

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CCSS.HSS.ID.A.4

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

• 68%
• 95%
• 99.7%
• 50%

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CCSS.HSS.ID.A.4

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

• 68%
• 95%
• 99.7%
• 50%

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CCSS.HSS.ID.A.4

CCSS.HSS.ID.A.2

 
Which curve has the greater standard deviation?

• Red
• Black
• Blue

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CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

What does this symbol represent?

• Mean
• Median
• Mode 
• Standard Deviation

What does this symbol represent?

• Standard Deviation
• Variance
• Mean Absolute Deviation
• Sigma