2.1 Mariana, a researcher at the World Health Organisation (WHO), collects information on weekly study hours (HOURS) and blood pressure when writing a test (BLOOD) from a sample of university students across the country, before running the regression BLOOD = f(STUDY). She collects data from 5 students as listed below: X (STUDY) 1 2 3 4 8 Y (BLOOD) 140 128 125 123 90 2.1.1 By using the OLS method and the information above derive the values for parameters B₁ and B2. 2.1.2 Derive the RSS and TSS (sum of squares for the residuals). 2.1.3 Hence, calculate the correlation coefficient

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2.1
Mariana, a researcher at the World Health Organisation (WHO), collects information
on weekly study hours (HOURS) and blood pressure when writing a test (BLOOD)
from a sample of university students across the country, before running the regression
BLOOD = f(STUDY). She collects data from 5 students as listed below:
X (STUDY)
1
2
3
4
8
Y (BLOOD)
140
128
125
123
90
2.1.1 By using the OLS method and the information above derive the values for parameters
B₁ and B2.
2.1.2 Derive the RSS and TSS (sum of squares for the residuals).
2.1.3 Hence, calculate the correlation coefficient
Transcribed Image Text:2.1 Mariana, a researcher at the World Health Organisation (WHO), collects information on weekly study hours (HOURS) and blood pressure when writing a test (BLOOD) from a sample of university students across the country, before running the regression BLOOD = f(STUDY). She collects data from 5 students as listed below: X (STUDY) 1 2 3 4 8 Y (BLOOD) 140 128 125 123 90 2.1.1 By using the OLS method and the information above derive the values for parameters B₁ and B2. 2.1.2 Derive the RSS and TSS (sum of squares for the residuals). 2.1.3 Hence, calculate the correlation coefficient
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