Question

The crtical values for -5% are F224-340, F3 24 301, F624-251 what is the correct conclusion? a. There is no significant interaction, but both variety and density are significant. c. There is significant interaction, so we cant assess individual variety and density effects. no significant interaction. Variety is significant, but density is not. d. ANOVA is not appropriate for this data. Answer the next two questions (14, 15) using the following plots 1.2 A A2 A A A A AL A2 A3 A A2 A 14. Which plot(s) indicate interaction between factors A and B. a. (A) 15. Which plot(s) indicate that there is no factor B effect? d. (A) and (C). b. (B) c. (A) and (B). b. (B) c. (C) d. (D) a. (A) uppose the correlation coefficient r between amount of sleep (in hours) and number of yawns made in 9:30AM classes of 40 students is computed to be -0.82. Then a. r cannot be negative b. c. people should get more sleep. d. the least-squares line slopes downward there is no linear relationship between the two variables Here are four scatter plots: Plot A Plot C Plot D Plot B Match the plots with their correlations. 17. Correlation97 18. Correlation 72 (c) Plot C (d) Plot D (a) Plot A(b) Plot B (c)Plot C(d) Plot D (a) Plot A(b) Plot B (c) Plot C(d) Plot D 19. (a) Plot A(b) Plot B 1 Correlation 02 (b) Plot B (c)Plot C(d) Plot D (a) Plot A 20. Correlation 82

Answer 1

Solution:-

16) (d) The least squares line slopes downward.

Since the correlation is negative, hence the least squares line slopes downward.

17) Correlation = - 0.97, Plot A

18) Correlation = - 0.72, Plot D

19) Correlation = - 0.02, Plot C

20) Correlation = 0.82, Plot B