Cummulative Frequency Curve (OGIVE)

From the diagram above, find the following:

• Number of children who celebrated their birth day.
• The probability of children of 30 people
• The number of people with probability 0.2
• The number of people with probability of either 0.1 or 0.9.

SOLUTION

• From the graph above, the number of children that celebrated birth day party is 10 + 20 + 30 + 40 + 50 + 60 = 210 children.
• The probability of children of 30 people = 0.7
• The number of people with probability of 0.2 = 15 people
• The number of people with probability of either 0.1 or 0.9 = 10 + 40 = 50 people.

ASSESSMENT: The table below shows the different shoe sizes:

• How many boys are involved
• Which shoe sizes is the most common
• Which shoe size is the least among them