Scores
Frequency
20-29
1
30-39
3
40-49
9
50-59
12
60-69
8
70-79
5
80-89
2
Total
40
1. Find the class interval and the frequency of the second class.
2. Find the upper class limit and the lower class limit of the third class.
3. Find the class mark of the fourth class.
4.Find the upper class boundary and the lower class boundary of the sixth class.
help po kailangan ko po ito ngayon^_^
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