If the crude death rate of population A is higher than B, but after age-standardization A's rate is lower, this indicates: MCQ with Answer and Explanation

If the crude death rate of population A is higher than B, but after age-standardization A's rate is lower, this indicates:

A. B has a higher mortality at every age

B. A has a younger age structure

C. A has an older age structure

D. Standardization is wrong

Answer: Option C

When an older population produces a higher crude rate despite lower age-specific rates, it is due to age confounding.

This question belongs to: Accountancy and Statistics Statistics

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Question #1 Report Error

If each of 20 values is increased by 10, the arithmetic mean will:

A. Increase by 200

B. Increase by 20

C. Increase by 10

D. Remain unchanged

Correct Answer: Option C

Explanation:
Adding a constant to all observations increases the mean by the same constant.

This question belongs to: Accountancy and Statistics Statistics

Question #2 Report Error

Life expectancy at birth is calculated from:

A. Age-specific death rates through a life table

B. Total fertility rate

C. Crude birth rate

D. Census data only

Correct Answer: Option A

Explanation:
Life tables use age-specific mortality rates to compute life expectancy.

This question belongs to: Accountancy and Statistics Statistics

Question #3 Report Error

If A and B are two attributes, the symbol (α) denotes:

A. Number not possessing attribute A

B. Number possessing attribute A

C. Number possessing neither A nor B

D. Number possessing both A and B

Correct Answer: Option A

Explanation:
α (alpha) is the negation of A; (α) is the number of items that do not possess attribute A.

This question belongs to: Accountancy and Statistics Statistics