Statistics Week 3

ONE standard deviation describes _____ of the data.

• 50%

• 68%

• 95%

• 99.7%

TWO standard deviations describe _____ of the data.

• 50%

• 68%

• 95%

• 99.7%

THREE standard deviations describe _____ of the data.

• 90%

• 98%

• 99.7%

• 100%

Mean = 10, Standard Deviation = 2

Where is most of the data?

• 8-12

• 10-12

• 10-20

• 8-20

Mean = 100, Standard Deviation = 25

Where is most of the data?

• 75-125

• 100-125

• 100-200

• 25-125

Mean = 35, Standard Deviation = 8

Where is most of the data?

• 27-43

• 29-41

• 30-45

• 8-35

What is a quantitative question?

• The answer is deseptive.

• The answer is a NUMBER

• The answer is a Description

• The answer is a Quality

Who can calculate Standard Deviation the fastest?

• Mr. Martinez

• Computers

• My Neighbor Larry

• Robots

How many people should answer your survey? MINIMUM

• 5

• 10

• 20

• 25

How many americans are there?

• 3 Million

• 30 Million

• 300 Million

• 3 Billion