# PRM IV

5 Questions | Total Attempts: 16  Settings  Statistical significance

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• 1.
The statistical significance of a result is the :
• A.

Probability that the observed r'ship or difference in a sample didn't occur by chance

• B.

Prob that the observed r'ship or difference in a sample occurred by chance and that in the pop'n from which the sample was drawn, no such r'ship exists.

• C.

Prob of the result occuring again in the same sample

• D.

None of the above

• 2.
In simpler terms, the stat signif of a result tells us something about :
• A.

The degree to which the result is false

• B.

The degree to which the result cannot be explained

• C.

The degree to which the result is true, in the sense of being representative of the pop'n

• D.

None of the above

• 3.
The significance level (p) tells us :
• A.

The probability of error involved in rejecting the idea that the relation in question does not exist in the population

• B.

The prob of error involved in rejecting the idea that the relation in ques does exist in the pop'n

• C.

None of the above

• 4.
The exact shape of the normal distribution is defined :
• A.

As the standard bell curve

• B.

By a function which has only 2 parameters: std dev and median

• C.

By a function which has only 2 parameters: std dev and mean

• D.

None of the above

• 5.
P is:
• A.

The prob of observing what you have in your sample by chance

• B.

The prob of not observing what you have in your sample by chance

• C.

The prob that the result is occurring in the pop'n