A company examining its employee retention rates considers the
number of complete
years a new employee works for a particular division before
leaving. The results are
shown in the table below:
Division A | 4 | 7 | 6 | 8 | 6 | |
Division B | 3 | 9 | 5 | 8 | ||
Division C | 8 | 10 | 9 | 8 | 5 | 7 |
(a) Perform a one-way analysis of variance at the 5% level to
compare the retention rates for
the three divisions.
(b) Present the data in a simple diagram and hence comment briefly
on the validity of the
assumptions required for the analysis of variance.
NOTE:IT WAS ANSWERED BY COMPUTER BUT I NEED IT ANSWERED BY HAND PLEASE ITS WORK I HAVE TO GIVE
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