heights of 12 students are given below : 159,148,138,150,165,166,145,152,155,160,147and 151 . find mean and medain of data
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Answer:
mean = The total no. of students heights÷ The total no.
of students
= 1836 ÷ 12
= 153
= 153 is answer
median = The total no. of students + 1 ÷ 2
= 12 + 1 ÷2
= 13 ÷ 2
= 6.5 th observation
= 6 th observation + 7 th observation ÷ 2
= 166 + 145 ÷ 2
= 311 ÷ 2
= 155.5
= 155.5 is answer
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