Graph Distribution

If this is the graph of data normally distributed with a mean of 30 and a standard deviation of 5, what label (number) is written at the blue circle?

• 20

• 15

• 40

• 30

If this is the graph of data normally distributed with a mean of 30 and a standard deviation of 5, what label (number) is written at the blue circle?

• 40

• 35

• 45

• 50

What shape is a normal distribution curve?

• Half curve

• Round curve

• Bell curve

• Square curve

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

• μ

• δ

• Σ

• Ζ

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

• .2912

• .5500

• .9394

• .7088

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

• .9265

• .4265

• .4500

• .5000

What is the total area under the curve?

• 1
• .9998
• .997
• -3 < z < 3

How is the graph distributed?

• Normally

• Skewed to the Left

• Skewed to the Right

• Uniform

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

• 50%

• 68%

• 95%

• 99.7%

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

• 5%

• 95%

• 2.5%

• 50%