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Several factors influence the value obtained for a t statistic. Some factors affect the numerator of the t statistic and others influence the size of the estimated standard error in the denominator. For each of the following, indicate whether the factor influences the numerator of dominator of the t statistic and determine whether the effect would be to increase the value of t (farther from zero) or decrease the value of t (closer to zero). In each case, assume that all other factors remain constant.
a. Increase the variability of the scores.
b. Increase the number of scores in the sample.
Increase the difference between the sample mean and the population mean.
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If the GCF of the numerator and the denominator is 1, the fraction is in its simplest form.
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You are both raising the factors or numerator and denominator
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You look for common factors, and divide both numerator and denominator by the same factor. For example, 9/12 has the common factor 3, if you divide numerator and denominator by 3, you get 3/4.
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Knowing factors will help you find a GCF. To simplify a fraction, divide the numerator and the denominator by their GCF.
