Math I End of Unit 1 Study Guide

True or False: The middle half of the data for the girls has less variability than the middle half of the data for the boys.

• true

• false

Answer explanation

Variability is looking at the IQR. The IQR for girls is smaller than the IQR for boys

True or False: The boys are typically taller than the girls in this class

• True

• False

Answer explanation

the typical height is looking at the median. The typical height of a boy is 66 inches, while the typical height of a girl is 67 inches

True or False: 50% of the girls have a height that is greater or equal to 66 inches. 

• True

• False

Answer explanation

75% of the girls have a height that is 66 inches or higher

True or False: The interquartile range for both boys and girls are equal and the median height for girls is greater than the median height for boys

• True

• False

Answer explanation

the IQR for girls is 3 and the IQR for boys is 5. The median height for girls is 67 inches and the boys median height is 66 inches.

The minimum of the data set is

The mean of the data set is (round to the nearest tenth)

The median of the data set is

The maximum of the data set is

True or False: The mean of the data plot is larger than the median.

• true

• false

Answer explanation

The median is slightly greater than the median. The Median and The mean are almost the same

Describe the standard deviation for restaurant A

• The standard deviation is large for Restaurant A because the there is more variety in the data.

• The standard deviation is small for Restaurant A because the data is closer to the mean.

Answer explanation

The standard deviation is large for Restaurant A because the data is spread out about the mean.