1)
mode =24
highest frequency number =24
maximum times number of years a person works before retirement is 24
2)arithmetic mean = total sum/# terms = 19.9091
average number of years a person works before retirement = 19.9091 years
3) median=21
median year is 21
This midpoint value is the point at which half the observations are above the value and half the observations are below the value
c)
k1=(x-µ)/(σ/√n) = (600-800)/(40/sqrt75) = -43.3013
k2 = (1000-800)/(40/sqrt75) = 43.3013
according to chybeshev theorem
proportion = 1-1/k^2 = 1 - 1/43.30^2=0.9995
so, 99.95% of income lie between RM 600 and RM1000
c3)if distribution is normal ,then 99.7% observation lie within 3 std dev away from mean
so, values are µ+/-3σ
(800-120,800+120)
(680,920)
rce department was interested in the average number of company's human resou years that a person...
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Person Years of study Wage (R'000s)
1
2
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