A health researcher was interested in finding out whether the DASH diet can lower a dieter’s blood pressure. Researchers compared the blood pressure before going on the diet with the same subject’s blood pressure after 12 weeks on the DASH diet.Which of the following is the most appropriate statistical test to use to test whether the DASH diet lowers blood pressure? ANOVA Inference for regression Matched pairs t-test Chi-squared test for independence Two-sample t-test
Question
A health researcher was interested in finding out whether the DASH diet can lower a dieter’s blood pressure. Researchers compared the blood pressure before going on the diet with the same subject’s blood pressure after 12 weeks on the DASH diet.Which of the following is the most appropriate statistical test to use to test whether the DASH diet lowers blood pressure? ANOVA Inference for regression Matched pairs t-test Chi-squared test for independence Two-sample t-test
Solution
The most appropriate statistical test to use in this case would be the Matched pairs t-test. This is because the same subjects' blood pressure is being measured before and after the diet, making the data paired. The Matched pairs t-test is designed to compare the means of the same group or item under two separate scenarios.
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