22 . The upperlimit of ard class, class mark of 5th class, Lower boundary of 4th class, class nidth and the total number of Testscores are respectively: a ) 61, 81.5 , 71.5, 9, 100 b ) 81, 90. 5, 100. 5, 61, 50 ( ) 61 , 70. 5 , 41.5, 100, 14 d ) 70, 85. 5, 70. 5, 10, 40 In problems # 23 to $25 Use the Following sample data : 22 35 22 46 57 72 23. The mean, variance, range and standard deviation of this sample data are respectively : a) 254 . 231, 238 . 476, 80, 15.29 b ) 42.333, 397. 867, 50, 19.95 ( ) 69 . 6 65 , 621 . 543, 34 , 17.82 d) 18. 546, 238. 476, 60, 24.96 24. The mode for this sample data is: ( ) 2 b ) 1 ( ) 22 d) 35 25. The Median, ( Ex) and Ex For this data are respectively. a ) 40.5, 64516, 12742 b ) 35. 5, 12742, 254 ( ) 46.5, 254, 64516 d ) 57.5, 32169, 56852 ( page 6 )