Objective: To Find the mean from tables with either
discrete or continuous data.
Find either the mean, or an estimate of the mean for the
following tables.
Also, write down the mode for each of the tables
|
Number of siblings |
0 |
1 |
2 |
3 |
4 |
5 |
|
Frequency |
4 |
3 |
10 |
2 |
5 |
6 |
|
Scores in a test |
5 |
6 |
7 |
10 |
11 |
12 |
|
Frequency |
5 |
6 |
12 |
15 |
2 |
4 |
|
Time(s) |
10≤t<12 |
12≤t<14 |
14≤t<16 |
16≤t<18 |
18≤t<20 |
20≤t<22 |
|
Frequency |
4 |
5 |
7 |
4 |
2 |
1 |
|
Favourite even number |
0 |
2 |
4 |
6 |
8 |
10 |
|
Frequency |
4 |
5 |
7 |
10 |
4 |
1 |
|
Number of sweets |
10 |
15 |
20 |
25 |
30 |
35 |
|
Frequency |
4 |
5 |
10 |
8 |
7 |
2 |
|
Height of trees (m) |
0≤t<5 |
5≤t<10 |
10≤t<15 |
15≤t<20 |
25≤t<30 |
35≤t<40 |
|
Frequency |
4 |
5 |
10 |
8 |
7 |
2 |
|
Score in a test |
0≤t<20 |
20≤t<30 |
30≤t<50 |
50≤t<70 |
70≤t<90 |
90≤t<100 |
|
Frequency |
2 |
5 |
10 |
7 |
3 |
1 |