(I the Standard Deviation the Positive Square Root of the Variance

question 32

Multiple Choice

(i. The standard deviation the positive square root of the variance. (ii) The capacities of several metal containers are: 38, 20, 37, 64, and 27 litres. The range in litres is 24.
(iii) The sum of the deviations of each value from the mean equals zero.

• A) (i), (ii) and (iii) are all correct statements
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements, but not (i).
• E) (i), (ii) and (iii) are all false statements.

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Definitions:

One-way Mirror

A piece of glass that is a mirror on one side but can be seen through like a window from the other, often used in psychological research or police lineups.

Positively Correlated

A relationship between two variables where an increase in one variable is associated with an increase in the other.

Average Daily Temperature

The mean temperature calculated by averaging the highest and lowest temperatures recorded in a 24-hour period.

Computer Games

Electronic games played using a personal computer or gaming console, involving interaction with user interface or input device for visual feedback.