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Do you know population SD? - PowerPoint PPT Presentation


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Do you know population SD?. Yes. No. Use Z Test. Are there only 2 groups to Compare?. Yes - Only 2. No - More than 2. No - More than 2 Groups. Yes - Only 2 Groups. Use ANOVA. Do you have Independent data?. If F not Significant, Retain Null. If F is Significant,

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Presentation Transcript
slide1

Do you know

population SD?

Yes

No

Use Z

Test

Are there only

2 groups to

Compare?

Yes -

Only 2

No -

More than

2

slide2

No -

More than

2 Groups

Yes -

Only 2

Groups

Use

ANOVA

Do you have

Independent data?

If F not

Significant,

Retain Null

If F is

Significant,

Reject Null

No

Yes

slide3

Do you have

Independent data?

If F not

Significant,

Retain Null

If F is

Significant,

Reject Null

No

Yes

Compare Means

With Multiple

Comparison Tests

Use

Independent

Sample

T test

Use Paired

Sample

T test

slide4

Use

Independent

Sample

T test

Use Paired

Sample

T test

Is t test

Significant?

Yes

No

Compare

means

Reject

Null

Hypothesis

Retain

Null

Hypothesis