Question
Question 1 According to the information given in Table: Age (x), years. Number of employees (f), pers. Interval centres (x') 25-30. 20. 27.5 30-35. 80.
Question 1 According to the information given in Table:
Age (x), years. Number of employees (f), pers. Interval centres (x')
25-30. 20. 27.5
30-35. 80. 32.5
35-40. 100. 37.5
40-45. 40. 42.5
45-50. 10. 47.5
Total. 250. x
Calculate the dispersion (use 1 "." separated decimal unit, e.g. 5.5)
Answer:
Question 2
According to the information given in Table:
Age (x), years Number of employees (f), pers.Interval centres (x')
20-25 10 22.5
25-30 110 27.5
30-35 70 32.5
35-40 50 37.5
40-45 10 42.5
Total 250 x
Calculate the median of the age (use 1 "." separated decimal unit, e.g. 5.5)
Answer:
Question 3
According to the information given in Table:
Age (x), years Number of employees (f), pers.Interval centres (x')
30-35 10 32.5
35-40 80 37.5
40-45 100 42.5
45-50 50 47.5
50-55 10 52.5
Total 250 x
Calculate the relative linear deviation (use 1 "." separated decimal unit, e.g. 5.5)
Answer:
Question 4
According to the information given in Table:
Gender Average age, years Number of employees Group dispersion
i ni Si2
Men 37 255 195
Women 44 295 265
Total - 550
Calculate the internal group dispersion (use 1 "." separated decimal unit, e.g. 5.5)
Answer:
Question 5
According to the information given in Table:
GenderAverage age, years Number of employees Group dispersion
i ni Si2
Men 38.5 245 205
Women 43.3 305 255
Total - 550
Calculate the empirical determination coefficient (use 1 "." separated decimal unit, e.g. 5.5)
Answer:
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