Find the mean: Class: 0-10, 10-20, 20-30, 30-40, 40-50 Frequency: 12, 11, 8, 10, 9
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Here is your answer
Step-by-step explanation:
make the table first
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Answer:
mean= 23.6
Step-by-step explanation:
clases freq mid points fixi
0-10 12 0+10/2=5 12×5=60
10-20 11 15 11×15=165
20-30 8 25 8×25=200
30-40 10 35 10×35=350
40-50 9 45 9×45=405
total 50 - 1180
Mean = sum of fixi / sum of frequencies
= 1180/ 50
= 23.6
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