Given:
The line graph shows the number of marks Stacey scored in her homeworks.
We need to determine the Stacey's mean score.
Mean score:
The total number of marks is given by
[tex](0\times 4)+(1 \times 5)+(2\times 3)+(3\times 4)+(4 \times 3)+(5 \times 1)[/tex]
Simplifying, we get;
[tex]0+5+6+12+12+5=40[/tex]
Thus, the total number of marks is 40.
Sum of the number of marks scored is given by
[tex]4+5+3+4+3+1=20[/tex]
Thus, the sum of the marks scored is 20.
The mean is given by
[tex]Mean=\frac{40}{20}[/tex]
[tex]Mean=2[/tex]
Therefore, Stacey's mean score is 2 marks.
