Answer:
Step-by-step explanation:
Given data : 6 , 3 , 2 , 1 , 9 , 9
Σfx = 6 + 3 + 2 + 1 + 9 + 9 = 30
N ( total number of observation ) = 6
<u>Finding </u><u>the</u><u> </u><u>mean</u><u> </u>
Hope I helped!
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1 + 1 + 2 + 2 + 3 + 3 + 4 + 4 + 5 + 5 + 6 + 6 + 7 + 7 + 8 + 8 + 9 + 9 + 10 + 10 - 90 = 20