statistics, question 3, grade 10
The table below shows the scores of 50 students in an exam out of 15.
|Increasing cum. freq.|
a) Specify the population and its size; the variable, its values and its kind.
b) Find x and y knowing that 30% of the students got at least 13.
c) Suppose in what follows that x = 12 and y = 10:
ii) Specify the mode .
iii) Complete the Increasing cum. freq. table then find the median.
iv) Calculate the number of students whose scores belong to the interval