Prepare a frequency table of the following scores obtained by 50 students in a test: 42,51,21,42,37,37,42,49,38,52,7,33,17 44,39,7,14,27,39,42,42,62,37,39,67,51, 53,53,59,41,29,38,27,31,54,19,53,51,22 61,42,39,59,47,33,34,16,37,57,43

Construct a frequency table with class-intervals 0-5 (5 not included) of the following marks obtained by a group of 30 students in an examination: 0,5,7,10,12,15,20,22,25,27,8,11,17,3,6,9,17,19,21, 29,31,35,37,40,42,45,49,4,50,16.

Form a grouped frequency distribution from the following data by inclusive method taking 4as the magnitude of class intervals. 31,23,19,29,22,20,16,10,13,34,38,33,28,21,15,18,36,24,18,15, 12,30,27,23,20,17,14,32,16,25,18,29,24,19,16,11,22,15,17,10

From a grouped frequency distribution from the following data by inclusive method taking 4 as the magnitude of class intervals. 31,23,19,29,22,20,16,10,13,34, 38,33,28,21,15,18,36,24,18,15, 12,30,27,23,20,17,14,32,26,25 18,29,24,19,16,11,22,15,17,10

Construct a frequency table for the following weights (in gm) of 35 mangoes using the equal class intervals, one of them is 40-45 (45 not included): 30,40,45,32,43,50,55,62,70,70,61,62,53,52,50,42,35,37,53, 55,65,70,73,74,45,46,58,59,60,62,74,34,35,70,68 What is the class marks of the class interval 40-45? What is the range of the above weights? How many classes are there?

Form a grouped frequency distribution from the following data by inclusive method taking 4 as the magnitude of class intervals. 31,23,19,29,22,20,16,10,13,34 38,33,28,21,15,18,36,24,18,15 12,30,27,23,20,17,14,32,26,25 18,29,24,19,16,11,22,15,17,10

The number of books in different shelves of a library are as follows: 30,32,28,24,20,25,38,37,40,45,16,20 19,24,27,30,32,34,35,42,27,28,19,34 38,39,42,29,24,27,22,29,31,19,27,25 28,23,24,32,34,18,27,25,37,31,24,23 43,32,28,31,24,23,26,36,32,29,28,21 Prepare a cumulative frequency distribution table using 45-49 as the last class-interval.

Given below are the marks obtained by 30 students in an examination : {:(08,17,33,41,47,23,20,34,09,18,42,14,30),(19,29,11,36,48,40,24,22,02,16,21,15,32),(47,44,33,01,,,,,,,,,):} Taking class intervals 1-10, 11-20 ,......, 41 - 50 , Make a frequency table for the above distribution.

Write the class size and class limits in each of the following: 104,114,124,134,144,154,164 47,52,57,62,67,72,77,82,87,92,97,102 12.5,17.5,22.5,27.5,32.5.,37.5,42.5, 47.5

The median of the following observations arranged in the ascending order is 42 . Find x : 22,24,33,37,x+1,x+3,44,47,51,58 . Also find the upper quartile

A psychologist selected a random sample of 20 students. He grouped them in 10 pairs so that the students in each pair have nearly equal scores in an intelligence test. In each pair, one student was taught by method A and the other by method B and examined after the course. The marks obtained by them after the course are as follows. {:("Pairs","Method A","Method B"),(1,34,38),(2,36,43),(3,28,39),(4,34,45),(5,40,43),(6,30,50),(7,34,52),(8,28,39),(9,32,40),(10,42,42):} Calculate spearman's Rank correlation