. The data below represents the heights (cm) of 20 boys
140 138 133 148 160
153 131 146 134 136
149 141 155 149 165
142 144 147 138 139
i. Construct a frequency distribution table using 6 classes. Draw a histogram and a frequency polygon and describe the shape of the histogram.
ii. Find the mean, median and modal for the distribution and interpret your results.
iii. Find the standard deviation and coefficient of variation and interpret your results.
iv. State two advantages each for measures of central tendency and measures of variation.
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