Unit 7 lessons 1-4

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode.
12,10,10,10,13,12,11,13,10

• 13
• 12
• 11
• 10

Find the median of these numbers:
4,2,7,4,3

• 2
• 5
• 7
• 4

What is the range?
8, 10, 60, 3, 5, 13, 12, 40, 8

• 55
• 8
• 57
• 17.7

What is the mode?

• # happening the most
• the average
• biggest - smallest
• the middle #

What is the mean?

• # happening the most
• the number in the middle
• biggest-smallest
• the average

To find the average of a set of numbers, add up all the items and divide by...

• 2.
• The smallest number
• The largest number
• The number of items in the set.

What’s the mode?

• 1
• 2
• 7
• 9

One group of subjects was given an herbal supplement and another group was given a placebo. After one year, the number of illnesses each group had was compared.

• Observational Study

• Experiment

A researcher stood at a school parking lot entrance to see if the color of a car is related to the driver not wearing a seatbelt.

• Observational Study

• Experiment

Four groups of randomly selected people are assigned a different diet. After six months, the blood pressures of each group are compared.

• Observational Study

• Experiment