The single-sample t-test compares the mean of the sample to a given number (which you supply). The dependent-sample t-test compares the difference in the means from the two variables to a given number (usually 0), while taking into account the fact that the scores are not independent.The independent samples t-test compares the difference in the means from the two groups to a given value (usually 0).he single sample t-test tests the null hypothesis that the population mean is equal to the given number specified using the option H0=. In our example, the t-value for variable write is 4.14 with 199 degrees of freedom.
Vermont had the second-highest median age, at 42.3 years. New Hampshire was third, with a median age of 42. Utah was the youngest state, with a median age of 29.9 years. Officials say among Maine counties, Lincoln is the oldest with a median age of 49.4 years. Androscoggin County was the youngest, at 40.5 years.
The New York Republican is only 30 years old. In comparison, the oldest Member of Congress, 85-year-old Rep. John Conyers of Michigan, is a Democrat. In fact, on average, Congressional Democrats are significantly older than their Republican counterparts. An infographic provided by Opportunity Lives notes that while House Democrats have a median age of 62, the median age of House Republicans is 55. In the Senate, Democrats have a median age of 64, compared to 55 for Senate Republicans. Republicans also have more members of Congress who are under the ages of 40 and 50. This entry was posted in Politics.