Decision Trees for Fundamental Statistics

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# Decision Trees for Fundamental Statistics - PowerPoint PPT Presentation

Decision Trees for Fundamental Statistics. To Select a Parametric Statistic to Evaluate Group Differences . To Select a D escriptive Statistic. Yes. Table. Nominal or Ordinal. No. Graph. One. Interval or Ratio. Two. No. Interval o r Ratio. More than two. Yes. Ordinal. One.

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Decision Trees for Fundamental Statistics

To Select a Parametric Statistic

to Evaluate Group Differences

To Select a Descriptive Statistic

Yes

Table

Nominal or Ordinal

No

Graph

One

Interval or Ratio

Two

No

Interval

or Ratio

More than two

Yes

Ordinal

One

Nominal

Matched

Two

Independent

Mean

Median

More than two

No

Mode

Yes

Matched

One

Location relative to the mean

Independent

Two

Standing relative to other scores

Two or more

Linear

One

Only two

Yes

Monotonic

Yes

No

None

Two

No

One

Yes

No

Only one

Matched

Two

Two

Yes

Independent

No

No

More than two

Discrete

Continuous

To Select a Statistic to Measure the

Relationship Between Two Variables

To Select a Nonparametric Statistic

to Evaluate Group Differences

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