LECTURE: 8
Statistical Test for the Fitness
, Chi-square ( ) test 2
One of the statistical applications that used to
analyze experimental results is the chi-square
2
( ) test of fitness.
(i) The goodness of fit
(ii) The significance of association between
two attributes (test of independence), and
(iii) The homogeneity or significance of
population variance
R.A. Fisher and F. Yates
, • 2 is employed to test the difference between an actual
sample and another hypothetical .
• or previously established distribution such as that
which may be expected due to chance or probability.
• It checks the goodness of fit between the expected
and observed results, to determine whether
differences are likely to be due to chance alone.
• 2 test of fitness can determine if the deviations from
the expected values are due to chance and therefore
should be accepted.
Statistical Test for the Fitness
, Chi-square ( ) test 2
One of the statistical applications that used to
analyze experimental results is the chi-square
2
( ) test of fitness.
(i) The goodness of fit
(ii) The significance of association between
two attributes (test of independence), and
(iii) The homogeneity or significance of
population variance
R.A. Fisher and F. Yates
, • 2 is employed to test the difference between an actual
sample and another hypothetical .
• or previously established distribution such as that
which may be expected due to chance or probability.
• It checks the goodness of fit between the expected
and observed results, to determine whether
differences are likely to be due to chance alone.
• 2 test of fitness can determine if the deviations from
the expected values are due to chance and therefore
should be accepted.
