9MAT2 Statistics Revision

How do you find the median of a data set that has two middle numbers?

• You pick the higher middle number

• You pick the lower middle number

• Add the two middle numbers and divide it by 2

• Subtract the two middle numbers and divide by 2

What is the definition of the mean?

• The average
• The middle number
• The difference between the highest and lowest numbers
• The number that occurs the most

At Dominique's Donuts the number of donut holes in a bag can vary.

What is the mode number of donut holes?
12, 10, 10, 10, 13, 12, 11, 13, 10

• 13
• 12
• 11
• 10

At Dominique's Donuts the number of donut holes in a bag can vary.

What is the mean number of donut holes?
12, 10, 10, 10, 13, 12, 11, 13, 10

• 13.1

• 12.3

• 11.2

• 10.0

At Dominique's Donuts the number of donut holes in a bag can vary.

What is the median number of donut holes?
12, 10, 10, 10, 13, 12, 11, 13, 10

• 13
• 12
• 11
• 10

How does the median number of miles driven for Driver A compare to the median number of miles driven for Driver B?

• Driver B drives much less than Driver A when comparing medians.

• The medians are the same

• Driver A drives much less than Driver B when comparing medians.

• Driver A and Driver B make the same amount of money.

What is the range of speeds for Driver A?

• 59

• 205

• 50

• 49

What is the range of speeds for Driver B?

• 59

• 205

• 50

• 49

What is the maximum speed for Driver A?

• 922 mph

• 229 mph

• 222 mph

• 224 mph

What word can be used to best describe the distribution of speeds for Driver B?

• Symmetrical

• Normal

• Positively skewed

• Negatively skewed