Statistical Economics

T-test 

👉t test given by William gossett

Also known as

1-student t-test

2-watch t-test

Introduction:- t test study of population and sample mean

        deviation from population parameter

                          standard error

Application

1-small sample test (n<30) but n- greater than t-test normal looking curve meso kurtik.

2-standard deviation is unknown and variance is unknow.

3-when population increase correlation=0, normal distribution.

4-two tailed test, normal curve, less peak.

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