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					Greek                                     English                Formulas and calculators

S        Sum of                                                  Linear transformation of score
s        (sigma) pop standard dev         S    sample st dev
    2
s        pop variance                     S2
                                               sample variance   Variance Calculator
m        (mu) population mean             M    sample mean
                                          C    raw score
                                          x deviation score
                                          x2 dev score squared
a        alpha                            r Pearson Correlation Pearson correlation for N=20
b        beta
d        delta
h        (eta) curvilear correlation
k        chi
v        omega
s2 =pq   var for binomial distributiion
f        phi
d calculators

rmation of score




elation for N=20
 Linear transformation of score

 Transformed score        X'        =   b       X       +           a
 Change (enter) b X or a below:

 Transformed score          10.8 = 0.45         15 +                4
                          Transformed score
                                      constant multiplied
                                               Raw Score
                                                                    constant added
                   X' =   Transformed score
                   b=     constant multiplier
                   X=     Raw score
                   a=     Constant added




 Variance calculator                            Enter X scores below
 Sum of squared dev scores divided by N-1


      Sample Variance S
                           2
                                    =       S   (X          -       M)2
                                                                N

Sample Variance (S2) =      0.69 =          S               2.75
        Stand Dev (S) = 0.829                                  4
     Sample Mean (M) =   3.25
                   N=       4                                       S(X -M)    S(X -M2)
                                                                              0 2.75
                                                 X          M           X-M       (X -M)2

                                                    2       3.25          -1.25    1.56
                                                    3       3.25          -0.25    0.06
                                                    4       3.25           0.75    0.56
                                                    4       3.25           0.75    0.56
                                   0     2.75


                         10    2   4
                         12    0   0
                         14    2   4
                          0    0   0
                         36   12   8+




Descriptive statistics




                                       N
                                       Mean
                                       Median

                                       Obs
                                             1
                                             2
                                             3
                                             4
                                             5
                                             6
                                             7
                                             8
                                             9
                                             10
                                             11
                                             12
                                             13
                                             14
                                             15
                                             16
                                             17
18
19
20
S(X -M2)
SS




                       Pearson correlation coefficient N=20
                       change some obs (in green below)


     r=       0.71
         20       20
     4.68      4.66
     4.65      4.70
                                                             Pearson r for N=20

     X        Y
     3.50      4.38                        6.50
     3.69      4.14                        6.00
     3.70      3.40
                                           5.50
     3.74      3.74
     3.99      4.41                        5.00
                              Y Variable




     4.07      4.42
                                           4.50
     4.11      2.80
     4.19      5.20                        4.00
     4.50      5.20                        3.50
     4.59      3.52
     4.71      5.28                        3.00
     4.80      3.83                        2.50
     4.81      5.43
     4.84      4.85                        2.00
     5.00      4.56                            2.00 2.50 3.00 3.50 4.00 4.50 5.00 5.50 6.00
     5.23      5.23                                                  X variable
     5.32      5.14
6.17   5.96
6.23   6.28
6.39   5.42
6.00 6.50 7.00

				
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posted:8/12/2011
language:English
pages:15