Which of the scatterplots to the right show a) little or no association? b) a negative association? c) a linear association? d) a weak or moderately strong association? e) a very strong association? a) Which scatterplot(s) show(s) little or no association? OA. All of these scatterplots B. None of these scatterplots C. 4 D. 2 1 3 KTTED (1) 19 (4)

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The Wilcoxon paired signed ranks test a. Is used with a correlated groups design b. Uses both the magnitude and direction of the data c. All of the answers d. Is used with data that is ordinal In scaling

Question 2 Let A e Mn.n- Show that AT A and AAT are similar. (Hint: You may want to use a SVD for A.)

Determine whether the samples are independent or dependent. A data set includes the age at marriage for 240 randomly selected married men and 240 randomly selected married women. Choose the correct answer below. O A. The samples are dependent because there is a natural pairing between the two samples. O B. The samples are independent because there is not a natural pairing between the two samples. Oc. The samples are dependent because there is not a natural pairing between the two samples. O D. The samples are independent because there is a natural pairing between the two samples.

Match each of the following to the corresponding graph. When you post you only need to give the number and the matching letter a, b, c, d, or e.  a)  r = 1     b)  negative correlation     c)  r = 0    d)   r = 0.752    e)  nonlinear correlation

Which of the scatterplots in the picture show each other the following? ​a) no​ association? ​b) a negative​ association? ​c) a linear​ association? ​d) a weak or moderate​ association? ​e) a very strong​ association?

7:41 A myopenmath.com Match each scatterplot shown below with one of the four specified correlations. a. 0.09 b. 0.26 C. -0.98 d. 0.83 00 8 2 00 o.° olo82 00

39 Sick leave of employees in a factory before and after Covid-19 was investigated in a year. Which of the following is the test statistic value in the hypothesis of whether there is a difference between the sick leaves of the employees? (The data do not satisfy the parametric assumption).  a) 9.5  B) 15.5  NS) 7.5  D) 3,5  TO) 5.5

a. If the trendline contains all the points in the scatterplot and the line points to the right, we conclude that there is a perfect positive correlation between the two variables. The computed r is equal to01-1none of theseb. The line that is closest to the points and its direction tells the direction of correlation that exists between the variables. trendlinescatterplotcartesian planefrequency polygon c. The following statements are true EXCEPT:A positive correlation exists when high values of one variable correspond to high values in the other variable.A negative correlation exists when high values in one variable corresponds to low values in one variable.A zero correlation exists when high values in one variable corresponds to neither high or low values in the other varA positive correlation exist when low values of one variable corresponds to low values in the other variable. d. The important numerical value in hypothesis testing isparametersample…