find the mean :
class
0-10
10-20
20-30
30-40
40-50
50-60
60-70
f
7
2
8
2
1
Answers
Answered by
0
Answer:
Sorry can't understand
Answered by
0
2.....................
Attachments:
Similar questions
Environmental Sciences,
5 months ago
Math,
5 months ago
Science,
11 months ago
Math,
11 months ago
Math,
1 year ago