MAT 300 Unit 4 Milestone 4 Exam Answer Sophia Course

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1 Which statement about correlation is FALSE? • The correlation of a data set can be positive, negative, or 0. • Correlation is used to define the variables of only non-linearly related data ... sets. • Correlation between the variables of the data set can be measured. • Correlation is the degree to which the two variables of a data set resemble each other. 2 Which of the following is a guideline for establishing causality? • Keep all variables the same to get duplicate results. • Do not consider other possible causes. • Check if the effect is present or absent when the response variable is present or absent. • Look for cases where correlation exists between the variables of a scatterplot. 3 Data for weight (in pounds) and age (in months) of babies is entered into a statistics software package and results in a regression equation of ŷ = 17 + 0.8x. What is the correct interpretation of the slope if the weight is the response variable and the age is the explanatory variable? • The weight of a baby decreases by 0.8 pounds, on average, when the baby's age increases by 1 month. • The weight of a baby increases by 0.8 pounds, on average, when the baby's age increases by 1 month. • The weight of a baby decreases by 17 pounds, on average, when the baby's age increases by 1 month. • The weight of a baby increases by 17 pounds, on average, when the baby's age increases by 1 month. 4 ......................................CONTINUED................................. [Show More]

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