Question

7. During a medical checkup, the number of heartbeats per minute of
40 patients were recorded and summarised as follows:
Number of heartbeats
64-68 | 68-72 | 72–76 | 76-80 80-84 84-88
per minute
Number of patients
6.
8
10
12
3
1
Find the mean heartbeats per minute for these patients.
(CBSE 2016​

Answer 1

Answer:

68-72

Step-by-step explanation:

normal heart beat rate is 72 times

Answer 2

Answer:

39.166666666666

Step-by-step explanation:

Mean is sum of observations by number of observations that is

6+8+10+12+3+1/7

=40/7

=39.166666666666