To make a histogram:
1. Draw and label x and y axis:
x-axis is label in the given situation as height
y-axis is label as frequency
2. Divide the y-axis into 5 parts (each part is 4 units)
Divide the x-axis into the given heights (7 class)
3. Graph the frequency of each class:
What percentage of the children were less than 149.5 cm in height?
- The 100% of the data is 50 children, from that there are 41 children less than 149.5cm in height; use a rule of three to find the corresponding percentage:
[tex]x=\frac{41*100}{50}=\frac{4100}{50}=82[/tex]
Then, the 82% of the children were less than 149.5 cm in height
