If 35 is the upper limit of the class interval of class-size 10, then the lower limit of the class interval is :
20
25
30
None of these
Class size = Upper limit – Lower limit
Lower limit = 35 - 10 = 25
If 35 is the upper limit of a class interval of class size 10, then the lower limit of the class interval is _____
Fill in the blanks : (i) Lower class limit of 15-18 is ___ . (ii) Upper class limit of 24-30 is ___. (iii) Upper limit of 5-12.5 is ___. (iv) If the upper and the lower limits of a class interval are 16 and 10; the class interval is ___. (v) If the lower and the upper limits of a class interval are 7.5 and 12.5; the class interval is ___.
The mid-value of a class interval is 42. If the class size is 10, then the upper and lower limits of the class are