Question

Two sections of a each class are given a quiz, which has a total of 10 1 point questions. The distributions of the grades are as follows:

Number correct	10	9	8	7	6	5	4	3	2	1	0
Section A	3	5	4	0	4	0	1	0	0	2	0
Section B	2	4	3	4	7	2	3	1	0	2	0

a) Compute the mean, median, and mode of the grades

b) Construct bar graphs of the grades

Answer 1

The data regarding the quiz is as follows: Number correct Section A Section B The mean represents the average of any dataset. The mean of the section A= 0+2+0+...... +3 11 19 11 = 1.7273 The mean of the section B = 0+2+0+...... +2 11 = 2.5455 The median represents the middle observation of a data set after arranging it into an order. For the section A: 0,0,0,0,0, 1, 2, 3, 4, 4, 5 The median = 1 For the section B: 0,0,1,2,2,2,3,3,4,4,7 The median = 2

The mode represents the most occurred observation in a given data set. The mode for the section A = 0 The mode for the section B = 2 b) To construct the bar graph of grades of the section A in Excel follow the below-given steps: • Put data in an Excel spreadsheet. • Select the range of Number correct' and 'Section A' first. Go to the Insert tab. . Click on All charts Bar Clustered column. Click on OK. • Right click on vertical axis then click on 'Select data' option. In the Edit option give the range of Number correct' column. And click OK. The Bar graph of section A and section B is as follows: Bar graphs of the grades Number Correct ONWU 006 1 1 2 3 4 5 6 7 8 Section B Section A