Normal distribution

What shape is a normal distribution curve?

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

Tags

CCSS.HSS.ID.A.3

According to the empirical rule, what percentage of data falls within 1 standard deviation? 

• 25%
• 68%
• 95%
• 99.7%

Tags

CCSS.HSS.ID.A.4

According to the empirical rule, how much of the data falls within 3 standard deviations? 

• 25%
• 68%
• 95%
• 99.7%

Tags

CCSS.HSS.ID.A.4

What's the probability x < 13?

(Mean = 10, Variance = 4)

• 0.9332

• 0.2266

• 0.7734

• 0.0668

Tags

CCSS.HSS.ID.A.4

Which gray area shows a probability closer to 0.5?

• 
• 
• 
• 

Tags

CCSS.HSS.ID.A.4

CCSS.HSS.MD.A.1

CCSS.HSS.MD.A.3

The center of the curve represents what value of a data set?

• μ
• δ
• Σ
• Ζ

Tags

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3

CCSS.HSS.ID.A.4

What is the area under the curve to the left of z = 0.55 ?

• .2912
• .5500
• .9394
• .7088

Tags

CCSS.HSS.ID.A.4

What is the area under the curve between z = 0 and z = 1.45?

• .9265
• .4265
• .4500
• .5000

Tags

CCSS.HSS.ID.A.4

What is the total area under the curve?

• 1
• .9998
• .997
• -3 < z < 3

Tags

CCSS.HSS.ID.A.4

How is the graph distributed?

• Normally

• Skewed to the Left

• Skewed to the Right

• Uniform

Tags

CCSS.HSS.ID.A.1

CCSS.HSS.ID.A.2

CCSS.HSS.ID.A.3