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.
(Age in years from birth to death). Today humans have an average life span of 31.99 years in Swaziland and 82 years in Japan. The oldest confirmed recorded age for any human ever born is 122 years of age, though some people are reported to have lived longer there are no records to confirm these claims.Age in years from birth to death). Today humans have an average life span of 31.99 years in Swaziland and 82 years in Japan. The oldest confirmed recorded age for any human ever born is 122 years of age, though some people are reported to have lived longer there are no records to confirm these claims.