Statistics Questions!! Statistical Tests!! which of the following statistical te
ID: 3428806 • Letter: S
Question
Statistics Questions!! Statistical Tests!!
which of the following statistical tests correspond to the following two data tables.
paired t test, unpaired t test, regression, correlation, or chi squared
1.Number of earthworms observed above ground each night as a function of the relative humidity of air
2.Rates of bacterial respiration (mg CO2/kg soil/h) in sandy vs. clay soils
Night Relative humidity (%) Number of worms per 100 m 1 45 2 2 85 11 3 80 8 4 55 4 5 50 4 6 70 6 7 60 8 8 75 14 9 70 10 10 40 0 11 65 3Explanation / Answer
(1) Answer: correlation
paired t test: It is not a sample of matched pairs.
unpaired t test: It is not two independent groups because it tests the same subject.
regression : It is estimating the relationships among variables.
chi squared: It is any statistical hypothesis test in which the sampling distribution of the test statistic is a chi-square distribution when the null hypothesis is true.
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(2) Answer: regression (because it has more than 2 variables)
paired t test: It is not a sample of matched pairs.
unpaired t test: It is not two independent groups because it tests the same subject.
chi squared: It is any statistical hypothesis test in which the sampling distribution of the test statistic is a chi-square distribution when the null hypothesis is true.