Statistics and Bias

A bag has 4 green marbles, 3 red, 2 blue and 1 yellow. What is the theoretical probability of pulling a red?

• 3/10

• 3/6

• 1/9

• 1/3

How likely are you to grab a circle or star?

• Likely

• Unlikely

The Probability Line above shows all possible probabilities, from 0% to 100%.

What is the probability shown with the red arrow?

• 0%

• 50%

• 75%

• 100%

What does MAD stand for?

• Mean Average Determined

• Mean Absolute Deviation

• Median Almond Dance

• Median Absolute Determined

Find the MAD of these numbers 25, 23, 28, 29, 27, 32, 24, 26, 22, 27

• MAD=26.3

• MAD=29.3

• MAD=2.93

• MAD=2.63

A small theme park is trying to determine the number of guests they should expect on a weekend, based on the temperature outside.  Based on the trend line, about how many guests should be expected if the temperature is around 80°?

• 8,300

• 8

• 7,300

• 9,300

• 7

• 2

• 3

• 4

• Ocean Beach

• Whispering Palms

• Serence Shores

• Pelican Beach

• 92

• 90

• 83

• 71

• Both will increase

• Only the median will increase

• Only the mean will increase

• Neither will change