# statistics

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The following gives the height of 100 men in centimeters.
153 162 168 154 151 168 162 153 161 167 157 154 165 156 163 165 160 171
170 173 164 158 163 155 167 162 168 153 161 166 163 162 163 163 163 164
165 163 162 162 163 161 162 162 158 162 167 158 169 168 168 156 160 158
169 156 158 157 168 163 164 162 164 163 162 161 169 164 161 156 167 168
167 159 164 171 168 165 159 165 168 159 162 165 168 154 163 162 157 150
165 169 164 163 163 163 169 160 164 167
find the mean using a frequency table

• statistics -

The mean = sum of scores/number of scores(100).

What frequency table do you have?

• statistics -

Suppose that people's heights (in centimeters) are normally distributed, with a mean of 165 and a standard deviation of 6. We find the heights of 100 people.
(a) How many would you expect to be between 157 and 173 cm tall?

(b) How many would you expect to be taller than 160 cm?

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