infer_os_prop_test compares proportion in one group to a specified population proportion.

infer_os_prop_test(data, variable = NULL, prob = 0.5, phat = 0.5,
  alternative = c("both", "less", "greater", "all"))

# S3 method for default
infer_os_prop_test(data, variable = NULL, prob = 0.5,
  phat = 0.5, alternative = c("both", "less", "greater", "all"))

Arguments

data

numeric vector of length 1 or a data.frame or tibble

variable

factor; column in data

prob

hypothesised proportion

phat

observed proportion

alternative

a character string specifying the alternative hypothesis, must be one of "both" (default), "greater", "less" or "all". You can specify just the initial letter.

Value

infer_os_prop_test returns an object of class "infer_os_prop_test". An object of class "infer_os_prop_test" is a list containing the following components:

n

number of observations

phat

proportion of 1's

p

assumed probability of success

z

z statistic

sig

p-value for z statistic

alt

alternative hypothesis

obs

observed number of 0's and 1's

exp

expected number of 0's and 1's

deviation

deviation of observed from expected

std

standardized resiudals

Deprecated Function

prop_test() has been deprecated. Instead use infer_os_prop_test().

References

Sheskin, D. J. 2007. Handbook of Parametric and Nonparametric Statistical Procedures, 4th edition. : Chapman & Hall/CRC.

See also

Examples

# use as a calculator infer_os_prop_test(200, prob = 0.5, phat = 0.3)
#> Test Statistics #> -------------------------- #> Sample Size 200 #> Exp Prop 0.5 #> Obs Prop 0.3 #> z -5.6569 #> Pr(|Z| > |z|) 0 #> #> ----------------------------------------------------------------- #> Category Observed Expected % Deviation Std. Residuals #> ----------------------------------------------------------------- #> 0 140 100 40.00 4.00 #> 1 60 100 -40.00 -4.00 #> -----------------------------------------------------------------
# using data set infer_os_prop_test(hsb, female, prob = 0.5)
#> Test Statistics #> ------------------------- #> Sample Size 200 #> Exp Prop 0.5 #> Obs Prop 0.545 #> z 1.2728 #> Pr(|Z| > |z|) 0.2031 #> #> ----------------------------------------------------------------- #> Category Observed Expected % Deviation Std. Residuals #> ----------------------------------------------------------------- #> 0 91 100 -9.00 -0.90 #> 1 109 100 9.00 0.90 #> -----------------------------------------------------------------