Statistics Semester Review

Using the information below, identify which of the following is an outlier:
Q1 = 3
Q2 = 7
Q3 = 12

• 22

• 25.5

• -8.5

• 26

What percent of the data is between 8 and 18

• 25%

• 50%

• 75%

What percent of students have a height between 64 inches and 66 inches?

• 25%

• 50%

• 75%

• 100%

What shape is a normal distribution curve?

• Half curve

• Round curve

• Bell curve

• Square curve

Name the correlation in this graph

• Positive correlation

• Negative correlation

• No correlation

• Lots of correlation

How many students have a shoe size bigger than 8?

• 2

• 3

• 4

• 9

What is the standard deviation for the data given:
5, 10, 7, 12, 0, 20, 15, 22, 8, 2

• 6.89

• 10.1

• 7.26

• 9

The mean temperature in Glens Falls for the month of February is 23 degrees with a standard deviation of 4.2 degrees.  What is the z-score for a temperature of 17 degrees?  

• 1 
• 1.43
• -1.43
• 11.5

A set of data is normally distributed. What percent of the data is within one standard deviation of the mean?

• about 95%

• about 50%

• about 68%

• 100%

The ages of participants in a Halloween party are normally distributed, with a mean of 30 and a standard deviation of 10 years. What percent of the participants are between 30 and 40?

• 95%

• 34%

• 16%

• 68%