A doctor observed that the pulse rate of 4 students is 72, 3 students is 78 and 2 students is 80.
Find the mean of the pulse rate of the above students.
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Answer:
mean = sum of observations/number of observations
Step-by-step explanation:
pulse of four stuents is 72,72,72,72
pulse of three students is 78,78,78
pulse of two students is 80,80
observations = 72,72,72,72,80,80,73,73,73
= 4*72,2*80,73*3
= 288,160,234 are observations
mean = 702/9
=78
mean =78
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