Answer:
The results from last quiz that Mr. Tham gave his class are 10, 15, 25, 75, 75, 77, 80, 83, 85, and 90.
Mean
[tex]=\frac{10+15+25+75+75+ 77+80+ 83+85+90}{10}\\\\=\frac{615}{10}\\\\=61.5[/tex]
Median:
Arranging data in ascending order: 10, 15, 25, 75, 75, 77, 80, 83, 85, and 90.
As, number of observation is even,that is 10, so median can be found by average of fifth and sixth term.
[tex]=\frac{75+77}{2}=\frac{152}{2}=76[/tex]
Mode:
Mode is that value in data set which occurs maximum number of times.
So, Mode = 75
As, most of data set which are on right of mean ,are nearer to mean. Median and mode are very far away from smallest data set , so these can't give better representation of data.
Option C: Mean is right choice.
