KIIT Moodle You can drag and drop files here to add them. Accepted file types All file types Question 2 Not yet answered a A comparative study of variation of weight (in pound) of Army-soldiers and Navy- sailors was made. The sample [4] variance of the weights of 120 soldiers was found 60 pound and the sample variance of the weights of 160 sailors Marked out of 12.00 was found 70 pounds. Test whether the soldiers and sailors have equal variation in their weights. Use 5 per cent evel of significance. Flag question What is scatter diagram? How does it help in studying the correlation between two variables, in respect of both its [2] direction and degree? The following factors were obtained while studying correlation: [6] N = 20 [xy = 0.7, X = 15, Y = 18, Ox = 4, Oy = 5. But at the time of calculation, a pair of items (12, 25) was wrongly taken in place of (21, 15). Find the correct xy