Name: Date:
Period:
Statistics-Ch 3 Descriptive Statistics of Quantitative Data
1. Pediatricians use percentiles to monitor the height and weight of their patients over time. According
to the Centers for Disease Control, the distribution of weights of 5 year old males has the following
quartiles:
1st quartile: 37 pounds 2nd quartile: 40 pounds 3rd quartile: 42 pounds
a) For each quartile, write a sentence that describes what the quartile means about the weights of
5 year old males.
Q1:
Q2:
Q3:
b) What percent of 5 year old males weigh...
i. Between 37 and 40 pounds
ii. Less than 40 pounds
iii. More than 40 pounds
iv.
More than 37 pounds
V.
Between 40 and 42 pounds
vi. Less than 37 pounds
vii. Between 37 and 42 pounds