Data Collection and Measures of Center and Spread

If a data set is bimodal, how many modes does it have?

• 1

• 2

• 3

• 4

• 20

• 13

• 14

• 15

• 17

A value that is much higher or much lower than the other values in a set of data.

• Outlier

• Box Plot

• Range

• Histogram

• only 2nd period is symmetric
• both plots are symmetric
• 5th period is bimodal
• 2nd period's center is higher than 5th period

• the spread of 5th period is greater than 2nd period
• the spread of 2nd period is greater than 5th period
• 5th period is skewed right

• 2nd period has a gap at 16
• 5th period has an outlier
• 5th period's center is higher than 2nd period
• 2nd period's spread is greater than 5th period's spread

• only Hayes Road is symmetric
• Hayes Road's center is at 60
• Jefferson Road's center is at 55
• only Jefferson Road is symmetric

• neither plot has an outlier
• Hayes Road is skewed right
• Jefferson Road's spread is less than Hayes Road's spread
• Hayes Road's center is at 55

• only one of the data sets is symmetric
• the median in 1st period is greater than the median in 5th period
• the highest test score is the same in both classes
• the interquartile range is larger in 1st period than in 5th period

• the median wait time for both rides is 35
• the Red Racer has a lower maximum than the Wild Viper
• the Wild Viper has a larger spread than Red Racer
• the Red Racer has a larger IQR than the Wild Viper