Chi square test
Not what you're looking for?
1. Paramertic test (such as t or AVOVA) differ from nonparametric test (such as chi-square) primarily in terms of the assumptions they require and the data they use. Explain these differences.
2. A researcher obtained a random sample of n=60 students to determine whether there were any significant preferences among three leading brands of colas. Each student tasted all three brands and then selected his or her favorite. The resulting frequency distribution is a s follows:
Brand A Brand B Brand C
28 14 18
Are the data sufficient to indicate any preferences among the three brands? Test with ∞=.05
Recent reports suggest that children who grow up with pets in the home tend to develop resistance to allergies. To test this phenomenon, a researcher interviews a sample of n=120 college students. Each student is asked about pets during childhood and about his or her current allergies.
0 1 2 or more
No Allergies 22 50 18 90
Allergies 18 10 2 30
40 60 20
a. Do the data indicate a significant relationship between having pets and developing resistance to allergies? Test at the .05 level of significance.
b. Compute Crame'rs V to measure the effect size.
See attached file for full problem description.
Purchase this Solution
Solution Summary
Step by step method for testing the hypothesis under 5 step approach is discussed here.
Purchase this Solution
Free BrainMass Quizzes
Measures of Central Tendency
This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.
Measures of Central Tendency
Tests knowledge of the three main measures of central tendency, including some simple calculation questions.
Terms and Definitions for Statistics
This quiz covers basic terms and definitions of statistics.
Know Your Statistical Concepts
Each question is a choice-summary multiple choice question that presents you with a statistical concept and then 4 numbered statements. You must decide which (if any) of the numbered statements is/are true as they relate to the statistical concept.