50 students enter for a school javelin throw competition the distance thrown are recorded below
Answers
48.8 m is mean Distance , 49.4 m is median distance , 50.9 m is Mode
Step-by-step explanation:
Distance f cf Mean distance mean * f
0 - 20 6 6 10 60
20 - 40 11 17 30 330
40 - 60 17 34 50 850
60 - 80 12 46 70 840
80 - 100 4 50 90 360
Total 50 2440
Mean = 2440/50 = 48.8
48.8 m is mean Distance
Median lies in 40-60
40 + 20 * (25 - 17)/17
= 40 + 9.4
= 49.4 m
49.4 m is median distance
Mode lies in 40-60
Mode = 40 + 20 * (17 - 11)/(17 - 11 + 17 - 12)
= 40 + 10.9
= 50.9 m is Mode
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