Question

If the following items are also added to above set of data, what would be the revised mean 18, 14, 14, 8, 10 and 21

Answer 1

Answer:

The "median" is the "middle" value in the list of numbers. To find the median, your numbers have to be listed in numerical order from smallest to largest, so you may have to rewrite your list before you can find the median. The "mode" is the value that occurs most often.

Answer 2

Answer:

Class Interval frequency (fi) Mid value fixi

0-10 12 5 60

10-20 16 15 240

20-30 6 25 150

30-40 7 35 245

40-50 9 45 405

N=∑fi=50 ∑fixi=1100

∴Mean=

∑fi

∑fixi

=

50

1100

=22