Application of averages  Measures of Central Tendency
Application of averages
Basic concepts:
 Median and mode
 Mean
 Range and outliers
Related concepts:
 Influencing factors in data collection
 Data collection
 Probability
Lessons

1.
A school collected gifts from students to give to needy children in the community over the Christmas holidays. The following numbers of gifts were collected.
Grade
Total number of gifts collected
1
65
2
100
3
70
4
54
5
45
6
54
7
43

c)
If the outlier is removed, what is the new mean? Round your answer to the nearest whole number.

2.
The following table represents the sizes of winter boots that were sold last week.
Size
5
6
7
8
9
10
Number Sold
3
2
4
4
0
1