Please enable JavaScript.

Coggle requires JavaScript to display documents.

Hypothesis Testing Methods (T Statistic (Shape of t Distribution (compared…

- - - - computed from sample variance or sample standard deviation
      - SM is used as an estimate of the real standard error when the value of population standard (or variance) is unknown
  - - - is an interval, or range of values that estimates the unknown population mean.
      - the logic is that a sample statistic such as sample mean should be relatively near to the corresponding population parameter
      - estimation formula: µ = M ± t(sM)
      - alternative method for describing the size of a treatment effect
- - - - The Sum of Products- measure degree of co variability between 2 variables; the degree to which they vary together
      - 1) SP=sum (X-Mx) (Y-My)
        
        2) SP= sum XY- (sum X) (sum Y)/n
        
        3) N=number of pairs of scores