What a P tail and explaint-Test: Two-Sample Assuming Unequal Variances Variable 1Variable 2 Mean20.0167919.98479 Variance0.0101180.008726 Observations5151 Hypothesized Mean Difference0 df99 t Stat1.664817 P(T<=t) one-tail0.049556 t Critical one-tail1.660391 P(T<=t) two-tail0.099111 t Critical two-tail1.984217

Name: What a P tail and explaint-Test: Two-Sample Assuming Unequal Variances
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Description: What a P tail and explaint-Test: Two-Sample Assuming Unequal Variances Variable 1Variable 2 Mean20.0167919.98479 Variance0.0101180.008726 Observations5151 Hypothesized Mean Difference0 df99 t Stat1.664817 P(T<=t) one-tail0.049556 t C

Given: Variable 1 Variable 2 Mean 20.01679 19.98479 Variance 0.010118…

Answered: What a P tail and explain t-Test:…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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What a P tail and explain

t-Test: Two-Sample Assuming Unequal Variances

	Variable 1	Variable 2
Mean	20.01679	19.98479
Variance	0.010118	0.008726
Observations	51	51
Hypothesized Mean Difference	0
df	99
t Stat	1.664817
P(T<=t) one-tail	0.049556
t Critical one-tail	1.660391
P(T<=t) two-tail	0.099111
t Critical two-tail	1.984217

Definition Definition Measure of central tendency that is the average of a given data set. The mean value is evaluated as the quotient of the sum of all observations by the sample size. The mean, in contrast to a median, is affected by extreme values. Very large or very small values can distract the mean from the center of the data. Arithmetic mean: The most common type of mean is the arithmetic mean. It is evaluated using the formula: μ = 1 N ∑ i = 1 N x i Other types of means are the geometric mean, logarithmic mean, and harmonic mean. Geometric mean: The nth root of the product of n observations from a data set is defined as the geometric mean of the set: G = x 1 x 2 ... x n n Logarithmic mean: The difference of the natural logarithms of the two numbers, divided by the difference between the numbers is the logarithmic mean of the two numbers. The logarithmic mean is used particularly in heat transfer and mass transfer. ln x 2 − ln x 1 x 2 − x 1 Harmonic mean: The inverse of the arithmetic mean of the inverses of all the numbers in a data set is the harmonic mean of the data. 1 1 x 1 + 1 x 2 + ...

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