the following given the data regarding accidents occuring during a certain period:
number of accidents : 1, 2 ,3 ,4 ,5 ,6
frequency:19, 22, 31, 9, 3, 2
on how many days three or less accidents occurred?
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Answer:
156 DAYS
Step-by-step explanation:
NO OF TIMES THERE WAS 1 ACCIDENT = 19
- Therefore 19 × 1 = 19 ------- 1
NO OF TIMES THERE WERE 2 ACCIDENTS = 22
- Therefore 22 × 2 = 44 ------- 2
NO OF TIMES THERE WERE 3 ACCIDENTS = 31
- Therefore, 31 × 3 = 93 --------3
ADDING EQUATIONS 1, 2 AND 3:
- WE GET 19 + 44 + 93 = 156
Ans. 156 days
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