The Pearson chi-squared test for association in 2x2 tables

Described in Chapter 4 "The 2x2 Table"

Pearson_chi_squared_test_2x2(n)

Arguments

n: the observed counts (a 2x2 matrix)

Value

An object of the contingencytables_result class, basically a subclass of base::list(). Use the utils::str() function to see the specific elements returned.

Examples

# Example: A lady tasting a cup of tea
Pearson_chi_squared_test_2x2(tea)
#> The Pearson chi-squared test: P = 0.15730, T = 2.000 (df = 1)

# Example: Perondi et al. (2004)
Pearson_chi_squared_test_2x2(perondi_2004)
#> The Pearson chi-squared test: P = 0.02393, T = 5.100 (df = 1)

# Example: Lampasona et al. (2013)
Pearson_chi_squared_test_2x2(lampasona_2013)
#> The Pearson chi-squared test: P = 0.03462, T = 4.464 (df = 1)

# Example: Ritland et al. (2007)
Pearson_chi_squared_test_2x2(ritland_2007)
#> The Pearson chi-squared test: P = 0.04501, T = 4.018 (df = 1)