নিম্নলিখিত ডেটার গাণিতিক গড় হল 14। k\n\nx_i\n এর মান খুঁজুন: 5 10 15 20 25\nf_...

The arithmetic mean of the following data is 14. Find the value of k x_i : 5 10 15 20 25 f_i : 7 k 8 4 5

Find the mean deviation about the mean for the data : x_i 5 10 15 20 25 f_i 7 4 6 3 5

Calculate mean deviation from the median for the following distribution: x_i : 10 15 20 25 30 35 40 45 f_i : 7 3 8 5 6 8 4 9

hoblem -3 x 68.5 40 30 x 10 -40 685 30 40 22.83 62.83 Average marks is 62.83 lem the average marks from the following distribution iculate 10-15 15-20 20-25 30 30-35 rks 5-10 No. of students tion, Marks (CH) No. student (f) Midvalue(x) d Fd 2.5 5-10 10-15 125 15-20 20-25 225 +1 25-30 27.5 2 +15 30-35 +3 32.5 25 Using step deviation formula Assumed Mean (A) 17.5 Common factor (i is 5 30 x 5 17.5 17.5 17.5 t 1.2 18.7 llinnon four An were 5's, 30 were 6's and the 540

Find the mean deviation from mean for the following data : {:(x_i:, 5,10,15,20,25),(f_i:,7,4,6,3,5):}

In which of the following tables, a\ a n d\ b vary directly. Also, find the constant of variation if a\ a n d\ b are in direct variation. (i) a, 4, 7, 21, 28 b, 12, 21, 63, 84 (ii) a, 2.5, 5, 7.5, 10, 15 b, 10, 20, 30, 40, 60 (iii) a, 1, 2, 3, 4, 5 b, 2, 1, 6, 3, 2/5

If A" "=" "{3," "6," "9," "12 , 15 , 18 ," "21} , B" "=" "{" "4," "8, 12 ,16 ," "20" "} , C" "=" "{" "2," "4," "6," "8, 10 , 12 , 14 , 16" "} , D" "=" "{5," "10 , 15 ," "20" "} ; find (i) A - B (ii) A - C (iii) A - D

What will come in place of the question mark (?) in the following series ? N 5 V, K 7 T, ?, E 14 P, B 19 N 1) I10R 2) H10Q 3) H9R 4) H10R 5) None of these