Lower Limit of Wt Class Frequency Cumulative 150 1 345 160

Lower Limit of Wt Class

Frequency

Cumulative %

150

1

3.45%

160

5

20.69%

170

4

34.48%

180

2

41.38%

190

0

41.38%

200

7

65.52%

210

5

82.76%

220

5

100.00%

What percent of the sample weighs 170 lbs. or less? ____ % 1 pt

How many subjects weigh more than 200 lbs?

   What percent of the subjects weigh more than 200 lbs?

Based on the graph the median weight is approximately:

How many subjects weigh less than 200 lbs? _____ lbs.

Solution

a)

percent of sample weighs less than 170 = 20.69%

b)

number of subjects weigh more than 200lbs = 7 + 5 + 5 = 17

c)

percent of subjects weigh more than 200 lbs = 17/29 = 58.62%

d)

median weight of graph = 190

e)

percent of subjects weigh less than 200 lbs = 100% - 58.62%

= 41.38%