wrappers.md
In infer: Tidy Statistical Inference

t_test works

Code
  res_ <- gss_tbl %>% t_test(hours ~ sex)
Condition
  Warning:
  The statistic is based on a difference or ratio; by default, for difference-based statistics, the explanatory variable is subtracted in the order "male" - "female", or divided in the order "male" / "female" for ratio-based statistics. To specify this order yourself, supply `order = c("male", "female")`.

Code
  gss_tbl %>% t_test(response = "hours", explanatory = "sex")
Condition
  Error in `t_test()`:
  ! The response should be a bare variable name (not a string in quotation marks).

chisq_test works

Code
  chisq_test(x = gss_tbl, response = age, explanatory = partyid)
Condition
  Error in `chisq_test()`:
  ! The response variable of `age` is not appropriate since the response variable is expected to be categorical.

Code
  chisq_test(x = gss_tbl, response = partyid, explanatory = age)
Condition
  Error in `chisq_test()`:
  ! The explanatory variable of `age` is not appropriate since the explanatory variable is expected to be categorical.

_stat functions work

Code
  res_ <- gss_tbl %>% chisq_stat(college ~ partyid)
Condition
  Warning:
  The chisq_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.

Code
  obs_stat_way <- gss_tbl %>% chisq_stat(college ~ partyid)
Condition
  Warning:
  The chisq_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.

Code
  obs_stat_way <- gss_tbl %>% chisq_stat(partyid ~ NULL)
Condition
  Warning:
  The chisq_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.

Code
  obs_stat_way_alt <- gss_tbl %>% chisq_stat(response = partyid)
Condition
  Warning:
  The chisq_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.

Code
  res_ <- gss_tbl %>% t_stat(hours ~ sex, order = c("male", "female"))
Condition
  Warning:
  The t_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.

Code
  obs_stat_way <- gss_tbl %>% t_stat(hours ~ sex, order = c("male", "female"))
Condition
  Warning:
  The t_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.

Code
  obs_stat_way_alt <- gss_tbl %>% t_stat(response = hours, explanatory = sex,
    order = c("male", "female"))
Condition
  Warning:
  The t_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.

Code
  res_ <- gss_tbl %>% t_stat(hours ~ NULL)
Condition
  Warning:
  The t_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.

Code
  obs_stat_way <- gss_tbl %>% t_stat(hours ~ NULL)
Condition
  Warning:
  The t_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.

Code
  obs_stat_way_alt <- gss_tbl %>% t_stat(response = hours)
Condition
  Warning:
  The t_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.

Code
  res_ <- chisq_stat(x = gss_tbl, response = age, explanatory = sex)
Condition
  Warning:
  The chisq_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.
  Error in `chisq_stat()`:
  ! The response variable of `age` is not appropriate since the response variable is expected to be categorical.

Code
  res_ <- chisq_stat(x = gss_tbl, response = sex, explanatory = age)
Condition
  Warning:
  The chisq_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.
  Error in `chisq_stat()`:
  ! The explanatory variable of `age` is not appropriate since the response variable is expected to be categorical.

conf_int argument works

Code
  res_ <- gss_tbl %>% t_test(hours ~ sex, order = c("female", "male"), conf_int = TRUE,
  conf_level = 1.1)
Condition
  Error in `t_test()`:
  ! The `conf_level` argument must be a number between 0 and 1.

Code
  no_var_equal <- gss_tbl_small %>% t_stat(hours ~ sex, order = c("female",
    "male"))
Condition
  Warning:
  The t_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.

Code
  var_equal <- gss_tbl_small %>% t_stat(hours ~ sex, order = c("female", "male"),
  var.equal = TRUE)
Condition
  Warning:
  The t_stat() wrapper has been deprecated in favor of the more general observe(). Please use that function instead.

two sample prop_test works

Code
  res_ <- prop_test(df, resp ~ exp)
Condition
  Warning:
  The statistic is based on a difference or ratio; by default, for difference-based statistics, the explanatory variable is subtracted in the order "a" - "b", or divided in the order "a" / "b" for ratio-based statistics. To specify this order yourself, supply `order = c("a", "b")`.

Code
  res_ <- prop_test(bad_df, resp ~ exp)
Condition
  Warning in `anova.lm()`:
  ANOVA F-tests on an essentially perfect fit are unreliable
  Error in `prop_test()`:
  ! The response variable of `resp` is not appropriate since the response variable is expected to be categorical.

Code
  res_ <- prop_test(bad_df2, resp ~ exp)
Condition
  Error in `prop_test()`:
  ! The explanatory variable of `exp` is not appropriate since the explanatory variable is expected to be categorical.

one sample prop_test works

Code
  res_ <- prop_test(df_1, resp ~ NULL)
Message
  No `p` argument was hypothesized, so the test will assume a null hypothesis `p = .5`.

Code
  res_ <- prop_test(df_1, resp ~ NULL, p = 0.2, success = "b")
Condition
  Error in `prop_test()`:
  ! b is not a valid level of resp.

prop_test handles >2 explanatory levels gracefully

Code
  res_2 <- prop_test(dfr, resp ~ exp, order = c("a", "b"))
Condition
  Warning:
  The `order` argument will be ignored as it is not well-defined for explanatory variables with more than 2 levels. To silence this message, avoid passing the `order` argument.

Code
  res_3 <- prop_test(dfr, resp ~ exp, order = c("a", "b", "c"))
Condition
  Warning:
  The `order` argument will be ignored as it is not well-defined for explanatory variables with more than 2 levels. To silence this message, avoid passing the `order` argument.

prop_test errors with >2 response levels

Code
  res_1 <- prop_test(dfr, resp ~ exp)
Condition
  Error in `prop_test()`:
  ! This test is not defined for response variables with more than 2 levels.

wrappers can handled ordered factors

Code
  ordered_t_1 <- gss_tbl %>% dplyr::mutate(income = factor(income, ordered = TRUE)) %>%
    chisq_test(income ~ partyid)
Condition
  Warning in `stats::chisq.test()`:
  Chi-squared approximation may be incorrect

Code
  ordered_f_1 <- gss_tbl %>% dplyr::mutate(income = factor(income, ordered = FALSE)) %>%
    chisq_test(income ~ partyid)
Condition
  Warning in `stats::chisq.test()`:
  Chi-squared approximation may be incorrect

Code
  ordered_t_2 <- gss_tbl %>% dplyr::mutate(income = factor(income, ordered = TRUE)) %>%
    chisq_test(partyid ~ income)
Condition
  Warning in `stats::chisq.test()`:
  Chi-squared approximation may be incorrect

Code
  ordered_f_2 <- gss_tbl %>% dplyr::mutate(income = factor(income, ordered = FALSE)) %>%
    chisq_test(partyid ~ income)
Condition
  Warning in `stats::chisq.test()`:
  Chi-squared approximation may be incorrect