What is the expected frequency (f_e) for Type C?

Question

Quizplus · Accepted Answer

From the given format, we see that the Type is C (third character), and the frequency is given by the last 6 characters (_e). Each of these characters can take values from 0 to 9, giving us a total of 10 * 10 * 10 * 10 * 10 * 10 = 1,000,000 possible frequencies. To calculate the expected frequency, we simply average over all possible frequencies. Here, we can use the fact that each digit has an equal probability of being any number from 0 to 9. Thus, the expected value of each digit is (0+1+2+3+4+5+6+7+8+9)/10 = 4.5. Therefore, the expected frequency is 4.5 * 4.5 * 4.5 * 4.5 * 4.5 * 4.5 = 125.20. Therefore, the best choice is (C).

What Is the Expected Frequency (Fe) for Type C

What Is the Expected Frequency (F_e) for Type C