Question 19

loading...

Prev/Next links

waecmaths question: 

 

Height

2

3

4

5

6

Frequency

2

4

5

3

1

The table shows the distribution of the height of plants in a nursery. Calculate the mean height of the plants

Option A: 

3.8

Option B: 

3.0

Option C: 

2.8

Option D: 

2.3

waecmaths solution: 

$\begin{align}  & mean=\overline{x}=\frac{\sum fx}{\sum f}=\frac{(2\times 2)+(3\times 4)+(4\times 5)+(5\times 3)+(6\times 1)}{2+4+5+3+1} \\ & \overline{x}=\frac{57}{15}=3.8 \\\end{align}$

maths year: 
maths topics: