The following is the distribution of height of students of a certain class in a city: Height (in cm): 160-162 163-165 166-168 169-171 172-174 No of students: 15 118 142 127 18
find mode and mean of data by step deviation method
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Answer:
xi = Upper limit + lower limit
Modal class = Having highest number of cumulative frequency
h = difference between lower & upper limit
l = lower limit
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