Write the lower limit, upper limit and mid point of first class in each of the following cases.
1)5-10
10-15
Which of the following alternatives is true?
(i) The class mid-point is equal to
(a) The average of the upper class limit and the lower class limit
(b) The product of upper class limit and the lower class limit
(c) The ratio of the upper class limit and the lower class limit
(d) None of the above
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 ___.