Mathematics 10
4th Prelim Reviewer
A. The data below are the shoe sizes of 200 students.
Size
4
4.5
5
No. of Students
13
30
20
5.5
45
6
18
6.5
41
7
18
Find the following:
1. Mean
2. Median
3. Mode
4. Q1
5. P90
B. Complete the table below.
The frequency distribution table of the weights of 100 mineral specimens collected
on a field trip.
Weight(grams)
C.
No. of
Lower
M
FM
<cf
specimen (f) boundary
0–9
18
10 - 19
15
20 - 29
25
30 – 39
15
40 - 49
12
50 - 59
8
60 - 69
7
TOTAL
100
Determine the following
1. Mean
2. Median
3. Mode
4. Lower class limits
5. Upper class limits
6. Class size of the distribution
7. Number of specimens weigh more than 49 grams
8. Number of specimens weigh less than 30 grams
9. Midpoint of a class that contains the highest frequency.
10. Range
11. Variance
Consider the scores of twos sets of students.
SET A: 10,11,9,12,11,10,12,11,11,9,10,12,9,11,10,12
SET B: 8,10,11,9,11,12,10,15,8,9,10,13,14,10,9,11
1. What is the mean of these two sets of data?
2. Solve the variance and standard deviation of each set of data.
3. Give your conjecture about the spread of these two groups.