semester 1 recap ?

What is the mean of this set of data?

2, 15, 7

• 24

• 3

• 6

• 8

What is the range in gas mileage for cars?

• 2
• 3
• 4
• 6

Find the mode:

3.8, 4.2, 4.0, 4.2, 4.2

• 4.2

• 3.8

• 4.0

• 4

What is the interquartile range (IQR)?

• 4
• 64
• 60
• 8

What value is the lower quartile?

• 66
• 58
• 60
• 64

What is the median?

• 62
• 58
• 66
• 60

How many people watched between 6 and 10 hours of TV last week?

• 35

• 22

• 31

• 15

What shape is a normal distribution curve?

• Half curve
• Round curve
• Bell curve
• Square curve

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