the table given below shows the pocket money that 30 students get. pocket money $ 10 , $20 , $ 30, $40. number of students 4 , 8 , 12 , 6 a. find the mean pocket money b. find the mode c. find the median.
Answers
Answer:
a) Mean = $26.6
b) Mode = $30
c) Median = $30
Step-by-step explanation:
a) Sum of pocket money = 40(10×4) + 160(20×8) +
360(30×12) + 240(40×6)
= $800
Mean pocket money = Sum of pocket money
Number of students
= 800
30
= $26.6
b) Mode = $30 (as most of the students (12) got $30 as
pocket money.
c) x F CF
10 4 4 1st ... 4th
20 8 12 5th ... 12th
30 12 24 13th ... 24th *
40 6 30 25th ... 30th
Median = N ÷ 2th term
= 30 ÷ 2th term
= 15th term
= $30 (as 15 is in * )
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