BIOL499A Chapter Notes - Chapter 26: Contingency Table, Test Statistic, Statistical Hypothesis Testing
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A goodness of fit test, Chi-square test of independence in a contingency table. Chi-square test of homogeneity in a contingency table. Definition: a goodness-of-fit test is one that is used to see if the distribution of the observed outcome of the sample trials supports a hypothesized population distribution. Note: we cannot prove a null hypothesis using a statistical test. Example 26. 1: a die was rolled 600 times, with the accompanying results. , there enough evidence to conclude that the die is. Example 26. 2: the mendelian theory states that the number of a certain type of peas falling into the classifications round and yellow, wrinkled and yellow, round and green, and wrinkled and green should be in the ratio. Suppose that 100 such peas revealed 56, 19, 17, and 8 in the respective classes. 9 of the peas should be round (hint: the expression 9:3:3:1 means that.