Propose a list of $$15$$ integer values corresponding to the grades of a class of mathematics in a test of ten questions. Then, fill the following table of absolute frequencies.
|
Note |
absolute frequency |
|
0 |
|
|
1 |
|
|
2 |
|
|
3 |
|
|
4 |
|
|
5 |
|
|
6 |
|
|
7 |
|
|
8 |
|
|
9 |
|
|
10 |
|
What is the mode of the grades of the examination?
Development:
Supposing that the students of the class have a good mathematics level, a possible list of grades would be:
$$$ 5,5,5,6,6,6,6, 7,7, 8, 9, 9, 9, 9, 9 $$$
The table of absolute frequencies will be the following one.
|
Mark |
absolute frequency |
|
0 |
0 |
|
1 |
0 |
|
2 |
0 |
|
3 |
0 |
|
4 |
0 |
|
5 |
3 |
|
6 |
4 |
|
7 |
2 |
|
8 |
1 |
|
9 |
5 |
|
10 |
0 |
The mode is $$9$$.
Solution:
$$5,5,5,6,6,6,6, 7,7, 8, 9, 9, 9, 9, 9 $$
|
Mark |
absolute frequency |
|
0 |
0 |
|
1 |
0 |
|
2 |
0 |
|
3 |
0 |
|
4 |
0 |
|
5 |
3 |
|
6 |
4 |
|
7 |
2 |
|
8 |
1 |
|
9 |
5 |
|
10 |
0 |
The mode is $$9$$.