# Question: Construct cumulative percentage distributions from the frequency distributions of absences

Construct cumulative percentage distributions from the frequency distributions of absences given in Exercise 3.122.

In exercise

In exercise

## Answer to relevant Questions

Unequal class intervals. The small number of observations greater than 7 in Exercise 3.119 may cause some difficulty in constructing a frequency distribution. To keep class intervals equal, one is faced with the dilemma of ...With reference to Example 3.4, verify that the values of the distribution function are given by F(x) = x2 + 5x / 50 For x = 1, 2, 3, 4, and 5. In exercise Check whether the function given by f(x) = x+2/25 for x = 1,2,3,4,5 ...The p. d. f. of the random variable X is given by Find (a) The value of c; (b) P(X < 1/4 ) and P(X > 1). Verify that f(x) = 2x/k(k+ 1) for x = 1, 2, 3, . . . , k can serve as the probability distribution of a random variable with the given range. Use the results of Exercise 3.39 to find expressions for the values of the probability density of the mixed random variable X for (a) x< 0; (b) 0< x< 0.5; (c) 0.5< x< 1; (d) x> 1. P(X = 0.5) = 1/2 , as we already ...Post your question