Mathematics B Regents High School Examination Worksheet- University Of The State Of New York, 2007 Page 14

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29 Conant High School has 17 students on its championship bowling team.
Each student bowled one game. The scores are listed in the accompa-
nying table.
(
x
)
(
f
)
Score
Frequency
i
i
140
4
145
3
150
2
160
3
170
2
180
2
194
1
Find, to the nearest tenth, the population standard deviation of these
scores.
How many of the scores fall within one standard deviation of the mean?
[14]
Math. B – June ’07

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