Question

Arrange the given heights of 20 students in grouped distribution with a class interval of 5. The number of students above the height of 169cm is ___ Heights (in cm): 150, 153, 162, 170, 186, 153, 162, 180, 165, 150, 178, 156, 184, 176, 173, 186, 159, 183, 180, 156.

Answer 1

$\begin{array}{cc}\text{Height}& \text{Number of Students}\\ \text{150-154}& \text{4}\\ \text{155-159}& \text{3}\\ \text{160-164}& \text{2}\\ \text{165-169}& \text{1}\\ \text{170-174}& \text{2}\\ \text{175-179}& \text{2}\\ \text{180-184}& \text{4}\\ \text{185-189}& \text{2}\\ \text{Total}& \text{20}\end{array}$

Number of students above the height of 169 = 2+2+4+2=10