Docstoc

correlation

Document Sample
correlation Powered By Docstoc
					                                                        Pearson Product Moment
                                                         Correlation Coefficient


Data Set A:

       x         y                                               Data Set A
       3         3                             10
       5         6
       4         7                              8



                              Reading Skills
       6         8
                                                6
       7         7
       8         6                              4                                       Series1
       6         7                                                                      Linear (Series1)
       7         9                              2
       8         8
                                                0
       9         9
                                                    0             5                10
                                                                Grades


rxy= 0.700467

There is a positive correlation between reading skills and grades. The coefficient is + 0.700467


Data Set B:

       x         y                                               Chart Title
       3         3                             10
       5         6
       4         7                             8
       6         5
                                               6
       7         7
                              L1




       8         3                             4                                        Series1
       6         7                                                                      Linear (Series1)
       7         9                             2
       8         5
                                               0
       9         9
                                                    0             5                10
                                                                 L2



rxy=          0.322903

There is a weak positive correlation between L1 Acquisition and L2 Acquisition.
The coefficient is -0.322903
                                                               Pearson Product Moment
                                                                Correlation Coefficient


Data Set C:
                                                                           Data Set C
       X        Y
                                                      10
       3        9
       5        8                                      8



                            Social Class Status
       4        5
       6        6                                      6
       7        4                                                                                Series1
                                                       4
       8        4
                                                                                                 Linear (Series1)
       6        3                                      2
       7        5
                                                       0
                                                           0   2       4       6        8   10
                                                                   School Performance



rxy=          -0.70286

There is a negative correlation between social class status and school performance.
The coefficient is -0.70286

Data Set D:
                                                                            Data Set D
       x        y                                     6
       3        2
                                                      5
       5        4
       4        5                                     4
                                 School Performance




       6        4
                                                      3
       7        3                                                                                Series1
       8        4                                     2
                                                                                                 Linear (Series1)
       6        5                                     1
       7        4
                                                      0
       8        2
                                                           0   2       4       6        8   10
       9        3
                                                                      Dress Code


rxy=          -0.15325

There is a week negative correlation between school performance and dress code.
The coefficient is -0.15325

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:12
posted:8/8/2012
language:Latin
pages:2