Find the x and y data below x: 10,15,25,35,40 y; 6,8,12,12,14. find the correlation coefficient find the regression equation predict the y value for x =20

How do you use the elimination method for this question? explain, because i really want to understand!

Adistribution has the five-number summary shown below. what is the third quartile, q3, of this distribution? 22, 34, 41, 55, 62

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236