Chi-square Test Flashcards
Who developed the Chi-square test?
Karl Pearson and R.A. Fisher
The chi-square test is a ______ of ___ test
Goodness of Fit
Chi-square test answers the question of ____
how well do experimental data fit expectations
What is the Greek letter for Chi?
“X”
Formula to get the chi-square statistic
i dictate na lang kay dli mbutang ang answer hehehhe
“obs”
the number of individuls of the given phenotype observed
“exp”
the number of that phenotype expected
The result is subjective and arbitrary
Reasonable
It is the critical factor in using the chi-square test, which is essentially the number of independent random variables involved
Degree of Freedom (df)
formula for df
df = number of classes of offsprings - 1
if your chi-square > cv
reject the null hypothesis
if chi-square < cv
fail to reject the null hypothesis
