Description
I will provide a link to a worksheet on bivariate data, regression lines and two way tables. Please answer the questions to the worksheet provided.
Explanation & Answer
Please check the attached solution. In case of any problem you can let me know. Thanks
Male
Female
TOTAL
Fourth Year College Trade or technical school Enter Workforce
1,200
600
500
1,300
300
200
2,500
900
700
Armed Services
Other
TOTAL
400
250
2,950
100
150
2,050
500
400
5,000
Running Head: Bivariate data, regression lines and two-way tables
Bivariate data, regression lines and two-way tables
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1
Bivariate data, regression lines and two-way table
2
Question A
Equation of the least square regression line:
We are given that: 𝑥 ̅ = 3.524, 𝑆𝑥 = 2.116, 𝑦 ̅ = 83.333, 𝑆𝑦 = 6.827 and 𝑟 = −0.328
The general equation for the least square method is summarized as 𝑦 ̅ = 𝑥 ̅ ∗ 𝑏1 + 𝑏0
Therefore, from the information provided we can re-write it as:
✓ 𝑏1 (slope)= 𝑟 ∗
✓
✓
✓
✓
✓
𝑠𝑦
𝑠𝑥
6.827
; = −...
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