A - Observation within subject design
B- Experimental matched subject design
C- Experimental within subject design
D- Observation between subject design
E- Observation matched subject design
A Observation Within Subject Design B Experimental Matched Subject Design C Experimental Within Subject Design D 1 (21.4 KiB) Viewed 27 times
Drishti has been completing 'medium level' Sudoku puzzles every day for some time, and is keen to know if her average completion time is faster than that of other 'puzzlers'. An internet source shows that the average time to complete a 'medium level' Sudoku puzzle is 20.2 minutes. For the next month, Drishti records the time she takes to complete each 'medium level' puzzle.
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