the red blood cell counts (in 10^5 cells per microliter) of a healthy adult measured on 5 days are as…

the red blood cell counts (in 10^5 cells per microliter) of a healthy adult measured on 5 days are as follows. 55, 51, 50, 54, 55 send data to calculator find the standard deviation of this sample of counts. round your answer to two decimal places.

the red blood cell counts (in 10^5 cells per microliter) of a healthy adult measured on 5 days are as follows. 55, 51, 50, 54, 55 send data to calculator find the standard deviation of this sample of counts. round your answer to two decimal places.

Answer

Explanation:

Step1: Calculate the mean

The mean $\bar{x}=\frac{55 + 51+50+54+55}{5}=\frac{265}{5}=53$.

Step2: Calculate the squared - differences

$(55 - 53)^2=4$, $(51 - 53)^2 = 4$, $(50 - 53)^2=9$, $(54 - 53)^2 = 1$, $(55 - 53)^2=4$.

Step3: Calculate the variance

The variance $s^{2}=\frac{4 + 4+9+1+4}{5 - 1}=\frac{22}{4}=5.5$.

Step4: Calculate the standard deviation

The standard deviation $s=\sqrt{5.5}\approx2.35$.

Answer:

$2.35$