A variable is something that can be measured or counted, such as characters, numbers, or time.
In the example below, each column represents a variable.
|
Duration |
Average_Pulse |
Max_Pulse |
Calorie_Burnage |
Hours_Work |
Hours_Sleep |
|
30 |
80 |
120 |
240 |
10 |
7 |
|
30 |
85 |
120 |
250 |
10 |
7 |
|
45 |
90 |
130 |
260 |
8 |
7 |
|
45 |
95 |
130 |
270 |
8 |
7 |
|
45 |
100 |
140 |
280 |
0 |
7 |
|
60 |
105 |
140 |
290 |
7 |
8 |
|
60 |
110 |
145 |
300 |
7 |
8 |
|
60 |
115 |
145 |
310 |
8 |
8 |
|
75 |
120 |
150 |
320 |
0 |
8 |
|
75 |
125 |
150 |
330 |
8 |
8 |
There are 6 columns, which correspond to 6 variables (Duration, Average_Pulse, Max_Pulse, Calorie_Burnage, Hours_Work, Hours_Sleep).
With 11 rows, each variable has 10 observations.
|
If there are 11 rows, why are there only 10 observations? This is because the first row serves as the label, representing the name of each variable. |
