find the mean of the following data:
Class. Frequency
200-299 3
300-399 61
400-499 118
500-599 139
600-699 126
700-799 151
800-899 2
Answers
Answered by
13
Answer:
A frequency distribution of the of life times 400 T.V. picture tubes tested in a tube company is given below. Find the average life of tube.
Life time ( in hrs) Frequency
300-399 14
400-499 46
500-599 58
600-699 76
700-68 68
800-899 62
900-999 48
1000-1099 22
1100-1199 6
Answered by
9
Answer:
85.71
Step-by-step explanation:
100×(3+61+118+139+126+151+2)
=100×600
=60000
Mean = 60000÷700 = 85.71
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