Height and weight are two measurements used to track a child

Height and weight are two measurements used to track a child

Solution

a. 11 kg

Z=(X-mean)/s

=(11-10.2)/0.8

=1

It means that it stays on one standard deviation.

-----------------------------------------------------------------------------------------------------------

b. 7.9 kg

Z=(X-mean)/s

=(7.9-10.2)/0.8

=-2.875

It means that it stays on -2.875 times standard deviation.

-----------------------------------------------------------------------------------------------------------

c. 12.2 kg

Z=(X-mean)/s

=(12.2-10.2)/0.8

=2.5

It means that it stays on 2.5 times standard deviation.