Prob Stat Review - Units 1-5

Which measure of central tendency would best represent this data?

• Mean

• Median

• Mode

• Range

Which measure of central tendency best represents this data?

• Mean

• Median

• Mode

• Range

What is normal distribution?

• A symmetrical bell-shaped graph

• A graph that is skewed to the right

• A graph that is skewed to the left

Shirt size can be measured as XS, S, M, L, XL. What type of data is this?

• Numerical

• Categorical

The number of students in each year level is counted. What type of data is number of students?

• Numerical

• Categorical

Estimate the correlation coefficient.

• r = -0.8
• r = -0.5
• r = 0.5
• r = 0.8

We wish to investigate the relationship between the number seeds planted in a garden and the number of fruit grown. The explanatory variable (EV) is

• The number of fruit grown

• The amount of soil in the garden

• The number of hours spent watering the plants

• The number of seeds planted

What axis does the explanatory variable go on?

• x-axis

• y-axis

What percent of people within 1 standard deviation of the mean?

• 99.7

• 34

• 68

• 95

At a local high school, GPA's are normally distributed with a mean of 2.9 and standard deviation of 0.6. What percentage of students at the high school have a GPA between 2.3 and 3.5?

• 68%
• 99.7%
• 95%
• 84%