Description Usage Arguments Details Value Author(s) References See Also Examples

This function calculates the correlation for the data and Cohen's d effect sizes, both based on pooled an on treatment standard deviations.

1 |

`Before` |
a numeric vector giving the data values for the first (before) measure. |

`After` |
a numeric vector giving the data values for the second (after) measure. |

`data` |
an optional data frame containing the variables in the formula. By |

This function computes the correlation between both measures as also both effect sizes based on Cohen's d statistic.

The inputs mus be numeric.

Return a table containing the correlation, effect size pooled and effect size based on treatment.

Daniela R. Recchia, Thomas Ostermann.

Cohen, J. (1988). Statistical power analysis for the behavioral sciences (2nd ed.). New York:Academic Press.

cohen.d,cor

1 | ```
cordata("Before","After",data=language_test)
``` |

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