# 6.4.3. Collecting Statistical Quantitative Data

The table below shows the heights of people in centimetres applying for the school of physical education. Using a frequency table, find the percentage of the ones whose heights are cm or less, approximated to the nearest hundredth if needed.

 180 160 193 195 169 174 181 177 165 165 181 177 162 164 167 179 160 155 188 176 175 180 168 158 184 195 164 174 173 164 176 156 190 174 182 180 155 176 182 175 179 170 186 173 166 159 180 188
• A
• B
• C
• D

### Example

The table below shows the heights of people in centimetres applying for the school of physical education. Using a frequency table, find the percentage of the ones whose heights are cm or less, approximated to the nearest hundredth if needed.

 180 160 193 195 169 174 181 177 165 165 181 177 162 164 167 179 160 155 188 176 175 180 168 158 184 195 164 174 173 164 176 156 190 174 182 180 155 176 182 175 179 170 186 173 166 159 180 188

### Solution

Make a frequency table of sets.

 Sets Frequency 5 12 15 12 4 Total 48

To find the percentage of students whose heights are less than 160 centimetres, divide the number of students in the set for by the total number of students, and multiply by 100.

It is enough to calculate the percent to three decimal places, because we need to round the result to the nearest hundredth.

Then round to the nearest hundredth.

0
correct
0
incorrect
0
skipped