There are 2 white balls and 2 red balls in each of two boxes called box A and box B. First take one ball from box A, put it into box B after viewing the color, and then take one ball from box B. Let X and Y be the number of red balls taken from boxes A and B respectively, then what is the correlation coefficientbetween X and Y

An educator wants to see how the number of absences for a student in her class affects the & student's final grade. The data obtained from a sample are shown. 10 12 2 Number of absences X Final Grade Y 0 8 5 70 65 96 94 75 82 Let Ex-37; Ey-482; Exy-2682; x-337; ²-39526 Draw a scatter plot. Compute the value of the correlation coefficient and interpret. b. 433

SA3535 6) The following data gives the distribution of scores of 10 students in mathematics and statistics in a test. Find the correlation coefficient r (X,Y). Scores in Mathematics(X): 28 30 27 38 28 Scores in Statistics (Y): 40 26 27 28 34 a) - 0.315 o b) -0.153 c) O - 0.351 d) - 0.531 4 26 39 37 36 38 32 26 27 37 26 W

1. A medical student is studying heart rate. The student wants to know if there relationship between age and heart rate. She collects the following data from children selected at random. Heart rate Age (yrs) 92 89 90 84 79 102 108 12 86 14 a) Make a scatter plot of the data. b) Describe the relationship(positive, negative and none) you see between heart rate and age and determine the type of correlation (linear or non-linear) that exists. Relationship Туре» c) Draw a line of best fit. d) What do you think is the heart rate of a newborn baby? Justify your answer. e) What do you think is the heart rate of someone who is 20 years old? What type of prediction is this?