Q10Short answerExercise 14.4
The mean of the following distribution is 50. x f 10 17 30 5a + 3 50 32 70 7a – 11 90 19 Find the value of a and hence the frequencies of 30 and 70.
The mean of the following distribution is 50. x f 10 17 30 5a + 3 50 32 70 7a – 11 90 19 Find the value of a and hence the frequencies of 30 and 70.