You are measuring heart rates on your unit and calcualte the

You are measuring heart rates on your unit and calcualte the variane to be 144. Based on this value what is the value of the standard deviation? The mean can be misleading when used to describe:

Solution

1. Standard deviation = (variance)^-0.5 = (144)^-0.5 = 12 . Option (d).

2. The mean can be misleading when used to describe skewed distributions. Option (b).