Visualize chi square distribution

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.

vdist_chisquare_plot(
  df = 3,
  normal = FALSE,
  xaxis_range = 25,
  print_plot = TRUE
)

vdist_chisquare_perc(
  probs = 0.95,
  df = 3,
  type = c("lower", "upper"),
  print_plot = TRUE
)

vdist_chisquare_prob(
  perc = 13,
  df = 11,
  type = c("lower", "upper"),
  print_plot = TRUE
)

Arguments

df	Degrees of freedom.
normal	If `TRUE`, normal curve with same `mean` and `sd` as the chi square distribution is drawn.
xaxis_range	The upper range of the X axis.
print_plot	logical; if `TRUE`, prints the plot else returns a plot object.
probs	Probability value.
type	Lower tail or upper tail.
perc	Quantile value.

Examples

# visualize chi square distribution
vdist_chisquare_plot()
vdist_chisquare_plot(df = 5)
vdist_chisquare_plot(df = 5, normal = TRUE)

# visualize quantiles out of given probability
vdist_chisquare_perc(0.165, 8, 'lower')
vdist_chisquare_perc(0.22, 13, 'upper')

# visualize probability from a given quantile.
vdist_chisquare_prob(13.58, 11, 'lower')
vdist_chisquare_prob(15.72, 13, 'upper')

Arguments

See also

Examples