The table shows the weights, to the nearest kilogram, of twelve students in a Further Mathematics class
Weight in kg
55
57
59
61
63
No of students
2
1
2
4
3
(a) Draw a bar chart to illustrate the above information; (b) What is (i) the mode; (ii) the median of the distribution? (c) Calculate the mean weight correct to the nearest kilogram.
Explanation
(a) (b)(i) The mode is 61kg. (ii) From the total number of students = 12, then the median is the average of the 6th and 7th weight. From the table, the median = 61kg. (c) Mean weight = =
