Unit 4: Assignment 3

Total marks = 20

Linear regression

1. Answer the following question about linear regression

• Why do we use linear regression?
• Which data is most suitable for linear regression?
• How do you interpret the parameters from linear regression analysis?
• How does linear regression differ from correlation?

2. How would interpret this finding from linear regression model?

What is y?

What is -3.20

What is .50X Y = -3.20 + .50X

Unit 4:Assignment 7

Total marks = 20

Supposea studywascarriedout, tofind outabout therelationshipbetween obesityanddiabetics betweenmenandwomenfor apopulation of1,000.Thenumberof men were350,and therestwere women. 150ofthestudypopulation were diagnosedwithdiabetes,ofwhich 40were men,andthe restwerewomen.The averageBMIformenwas 33, and for womenwas 35.Averageweight for men was 77kg,whilewomen was80 kg.Height meanwas 1.7formenand1.5for women.Thedatawasalso examinedbyrace, that is African,white,colored,andIndian

You are supposedtocompile areportforcategoricaldatafromthis study, andcontinuousdata,t-tests, ANOVA,correlation,linear andmultivariatelinear regression,usethequestions belowusingthe scenario ,to compile whatyouwould reportfor theseparameters

• Howdo you reportforcategorical data?

• Howdo you compile areport onfindingsfor continuous data?

• Canyou compile areporton t-testandANOVA?

• Howdo you compile areport on linear andmultivariateregression analysis findings?