SOLUTION: Pls could you help me with this Marks 10-19 20-29   30-39  40-49 50-59 60-69 70-79 80-89 90-99 Frequency 1 3 7 20 30 22 10 5 2 Using 54.5 as an assumed mean calculate the mean m

Algebra ->  Probability-and-statistics -> SOLUTION: Pls could you help me with this Marks 10-19 20-29   30-39  40-49 50-59 60-69 70-79 80-89 90-99 Frequency 1 3 7 20 30 22 10 5 2 Using 54.5 as an assumed mean calculate the mean m      Log On


   



Question 937191: Pls could you help me with this
Marks 10-19 20-29   30-39  40-49 50-59 60-69 70-79 80-89 90-99
Frequency 1 3 7 20 30 22 10 5 2
Using 54.5 as an assumed mean calculate the mean mark and standard deviation of the distribution      

Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
So you need only the standard deviation ?
You can contact me at:
mthman@gmail.com
Thanks