Explanation:lm calls the lower level functions lm.fit. 6. Which of the following is tool for checking normality ?
A. qqline()
B. qline()
C. anova()
D. All of the mentioned
Answer:A
Explanation:lm calls the lower level functions lm.fit. 6. Which of the following is tool for checking normality ?
A. qqline() B. qline() C. anova() D. All of the mentioned
Explanation:qqnorm is another tool for checking normality. 7. Which of the following is lattice command for producing boxplots ?