Question

sol it frnds_________?4​

Answer 1

Answer:

Here's your AnSwEr mate hope it helps you please mark me brainlist✌✌✌✌✌✌

Answer 2

Answer:

hi mate ,

no of heart beat

=65-68,68-71,71-74,74-77,77-80,80-83,

83-86

frequency=2,4,3,8,7,4,2

x= 66.5,69.5,72.5,75.5,78.5,81.5,84.5

fx= (66.5×2)+(69.5×4)+(72.5×3)+(75.5×8)+ (78.5×7)+(81.5×4)+(84.5×2)

fx=133+278+217.5+604+549.5+326+169

fx = 2277

mean = £fx/£f

= 2277/30

= 75.9

Therefore, the mean is 75.9

hope it helps!!