# dist_chi_plot: Visualize chi square distribution In rsquaredacademy/descriptr: Generate Descriptive Statistics & Explore Statistical Distributions

## Description

Visualize how changes in degrees of freedom affect the shape of the chi square distribution. Compute & visualize quantiles out of given probability and probability from a given quantile.

## Usage

 ```1 2 3 4 5``` ```dist_chi_plot(df = 3, normal = FALSE) dist_chi_perc(probs = 0.95, df = 3, type = c("lower", "upper")) dist_chi_prob(perc, df, type = c("lower", "upper")) ```

## Arguments

 `df` Degrees of freedom. `normal` If `TRUE`, normal curve with same `mean` and `sd` as the chi square distribution is drawn. `probs` Probability value. `type` Lower tail or upper tail. `perc` Quantile value.

## Value

Percentile for the `probs` based on `df` and `type` or probability value for `perc` based on `df` and `type`.

## Deprecated functions

`chi_plot()`, `chi_prob()` and `chi_per()` have been deprecated. Instead use `dist_chi_plot()`, `dist_chi_prob()` and `dist_chi_perc()`.

`Chisquare`

## Examples

 ``` 1 2 3 4 5 6 7 8 9 10 11 12``` ```# visualize chi square distribution dist_chi_plot() dist_chi_plot(df = 5) dist_chi_plot(df = 5, normal = TRUE) # visualize quantiles out of given probability dist_chi_perc(0.165, 8, 'upper') dist_chi_perc(0.22, 13, 'upper') # visualize probability from a given quantile. dist_chi_prob(13.58, 11, 'lower') dist_chi_prob(15.72, 13, 'upper') ```

rsquaredacademy/descriptr documentation built on Dec. 13, 2018, 6:23 p.m.