A marketing researcher introduces two toys to each of 50 girls and 50 boys. Of these: 20 girls choose toy 1 and 30 girls choose toy 2; 30 boys choose toy 1 and 20 choose toy 2. Set up a 2 x 2 contingency table and run a chi-square test. Look at the p-value. So - is there a significant sex difference in toy preference? Use this web-based calculator: Chi Square Calculator 2x2 (socscistatistics.com) Call row 1 girls and row 2 boys (arbitrary which row you call what), and call column 1 toy 1 and column 2 toy 2. Then enter the frequencies in each of the four cells. Then click on calculate.

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A marketing researcher introduces two toys to each of 50 girls and 50 boys. Of these: 20 girls choose toy 1 and 30 girls choose toy 2; 30 boys choose toy 1 and 20 choose toy 2. Set up a 2 x 2 contingency table and run a chi-square test. Look at the p-value. So - is there a significant sex difference in toy preference? Use this web-based calculator: Chi Square Calculator 2x2 (socscistatistics.com) Call row 1 girls and row 2 boys (arbitrary which row you call what), and call column 1 toy 1 and column 2 toy 2. Then enter the frequencies in each of the four cells. Then click on calculate. 

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