Question

A true causal factor may increase or decrease the chance of disease. Select one: True False...

A true causal factor may increase or decrease the chance of disease. Select one: True False

When there is no association there is no causation. Select one: True False

When there is an association there must be causation. Select one: True False

Most diseases have a single cause. Select one: True False

Math   Statistics-And-Probability   
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Answer #1

1. Causation means any change in the value of one variable will cause a change in the value of another variable so correlation (or association) does not imply causation so "When there is no association there is no causation" is false statement.

Hence Option: False.

2. Similarly the statement "When there is an association there must be causation" is false statement.

Hence Option: False.

3. "Most diseases have a single cause" is a true statement (For example hypertension is a single cause for several diseases).

Option: True.

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