1. Chi-Square - Goodness of Fit
Section 2
Chi-Square - Goodness of Fit

2. Chi-Square Goodness of Fit Test
determines if proportions in one situation hold true in a different situation
used to test the hypothesis that an observed frequency distribution fits (or conforms to) some claimed distribution

3. Formulas E = n • p df = k – 1 (k = number categories)
*always right-tailed test

4. Example Mars, Inc. claims that its M&M plain candies are distributed with the following percentages:
Color % O E
Brown 13 4
2.86
Yellow 14 3
Red 1
Orange 20 5
Green 16
Blue 24
Use a 5% level of significance to test the claim