Six different second-year medical students at Bellevue Hospital measured the blo

Question

Six different second-year medical students at Bellevue Hospital measured the blood pressure of the same person. The systolic readings (in mmHg) are listed below. Find the range, variance, and standard deviation for the given sample data.

If the subject's blood pressure remains constant and the medical students correctly apply the same measurement technique, what should be the value of the standard deviation? 140 126 150 126 149 149140 126 150 126 149 149

Find

range,

variance,

standard deviation

What should be the value of the standard deviation?

A.

Ideally, the standard deviation would be one because this is the lowest standard deviation that can be achieved.

B.

Ideally, the standard deviation would be one because all the measurements should be the same.

C.

Ideally, the standard deviation would be zero because all the measurements should be the same.

D.

There is no way to tell what the standard deviation should be.

Click to select your answer(s).

Explanation / Answer

a) Range = Maximum- Minimum = 150-126 = 24

Variance = 130.8

Standard deviation = Sqrt(130.8) = 11.44

Ideally, the standard deviation would be zero because all the measurements should be the same

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