The histogram above shows the ages of victims of a pollut...
The histogram above shows the ages of victims of a pollution. How many people were involved in the pollution?
20
21
15
18
Correct answer is A
\(\begin{array}{c|c} \text{Age in years} & 10 & 20 & 30 & 40 & 50 \\\hline \text{frequency} & 3 & 4 & 5 & 6 & 2\end{array}\)
\(\sum f \) = number of people involved in the pollution
\(\sum f\) = 3 + 4 + 5 + 6 + 2 = 20
Similar Questions
Find x if (x - 2)2 = 1\(\frac{7}{9}\)...
In the diagram, PQ//RT, QR//Su, ...
An equilateral triangle has a side 2 cm. Calculate the height of the triangle. ...
Divide 1101001\(_{two}\) by 101\(_{two}\)...
In a town of 6250 inhabitants, there were 62 births during 1984. Find the percentage birth rate ...
Find the values of p and q such that (x - 1)and (x - 3) are factors of px3 + qx2 + 11x - 6 ...
Find the 7th term of the sequence: 2, 5, 10, 17, 6,......
Find the value of x which satisfies the equation 5(x-7)=7-2x ...