Data Presentation - Tables
Tables are a useful way to organize information using rows and columns. Tables are a versatile organization tool and can be used to communicate information on their own, or they can be used to accompany another data representation type (like a graph). Tables support a variety of parameters and can be used to keep track of frequencies, variable associations, and more.
For example, given below are the weights of 20 students in grade 10:
50, 45, 48, 39, 40, 48, 54, 50, 48, 48, \\ 50, 39, 41, 46, 44, 43, 54, 57, 60, 45.
50,45,48,39,40,48,54,50,48,48,
50,39,41,46,44,43,54,57,60,45.
To find the frequency of 4848 in this data, count the number of times that 4848 appears in the list. There are 44 students that have this weight.
The list above has information about the weight of 2020 students, and since the data has been arranged haphazardly, it is difficult to classify the students properly.
To make the information more clear, tabulate the given data.
\begin{array}{c}\\ \text{Weights in kg} & & & \text{Frequency} \\ 39 & & & 2 \\ 40 & & & 1 \\ 41 & & & 1 \\ 43 & & & 1 \\ 44 & & & 1 \\ 45 & & & 2 \\ 46 & & & 1 \\ 48 & & & 4 \\ 50 & & & 3 \\ 54 & & & 2 \\ 57 & & & 1 \\ 60 & & & 1 \end{array}
Weights in kg
39
40
41
43
44
45
46
48
50
54
57
60
Frequency
2
1
1
1
1
2
1
4
3
2
1
1
This table makes the data more easy to understand.
