Type 1/2 Errors Flashcards

1
Q

What is a type 1 error ?

A

Situation in which our findings show something, when they actually don’t (false positive).

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2
Q

What do we incorrectly do with null hypothesis with type 1 errors?

A

-Incorrectly reject the null hypothesis, when we should have accepted it.
-Assume results were due to IV when they were in fact due to chance.

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3
Q

Why do type 1 errors occur?

A

-Set p value too leniently
-The higher p value increases, the higher the possibility the results were down to chance.

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4
Q

What are type 2 errors?

A

When findings don’t show something, when they should (False negative).

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5
Q

What do we incorrectly do with null hypothesis with type 2 errors?

A

-Incorrectly accept the null hypothesis, when we should have rejected it.
-Assumed the results were down to chance, when they were down to IV.

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6
Q

Why do type 2 errors occur ?

A

-When p value is set too high.
-Higher the value, higher the possibility the results were down to IV.

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7
Q

When is it necessary to set p value lower ?

A

Can be necessary when trialing new medicine treatments.

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