A researcher compares differences in monthly income between groups with differen

Question

A researcher compares differences in monthly income between groups with different levels of education (Less than High School N = 8, High School Graduate N = 12, Some College N = 16, College Graduate: N = 8).

1. Using the information from the table below, report the Mean Squares Within Groups (MSw). Round your answer to the nearest hundredth (i.e., two decimal places).

2. then, Using the information from the table below, report the Mean Squares Between Groups (MSb). Round your answer to the nearest tenth (i.e., one decimal place).

Source

SS

df

MS

Between

52.5

Within

18

Total

70.5

Source

SS

df

MS

Between

52.5

Within

18

Total

70.5

Explanation / Answer

here between df =k-1= 4-1=3

within =N-k =8+12+16+8-4=40

hence total df =40+3 =43

and as MS =SS/df

therefore below is ANOVA table:

Source SS df MS Between 52.5 3 17.5 Within 18 40 0.45 Total 70.5 43

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