3rd Form Christmas Term Assignment #6

The cumulative frequency distribution of the volume of petrol needed to fill the tanks of 150 different vehicles is shown in the image. for the class 21 to 30, determine the upper class boundary.

• 30.5

• 31

• 20.5

• 21

The cumulative frequency distribution of the volume of petrol needed to fill the tanks of 150 different vehicles is shown in the image. How many vehicles were recorded in the class 31 to 40?

• 42

• 101

• 18

• 0

The cumulative frequency distribution of the volume of petrol needed to fill the tanks of 150 different vehicles is shown in the image.

A vehicle is chosen at random from the 150 vehicles. What is the probability that the volume of petrol needed to fill its tank is more than 50.5 litres?

The table shows the ages, to the nearest year, of the persons who visited a clinic during a particular week. Which of the options correctly completes the cumulative frequency column?

• 35, 47

• 20, 12

• 27, 30

• 26, 46

The table shows the ages, to the nearest year, of the persons who visited a clinic during a particular week. Complete the table and use graph paper to draw a cumulative frequency curve. Use your graph to estimate the median age for the data.

• 30 years

• 90 years

• 64.5 years

• 75.5 years

The table shows the ages, to the nearest year, of the persons who visited a clinic during a particular week. Complete the table and use graph paper to draw a cumulative frequency curve. Use your graph to estimate the probability that a person who visited the clinic was 75 years or younger.

What is another name for a cumulative frequency curve?

• Line graph

• S-curve

• Parabola

• Ogive

What form does the coordinates to be plot on a cumulative frequency graph take?

• (Upper Class Boundary, Cumulative Frequency)

• (Cumulative Frequency, Upper Class Boundary)

• (Upper Class Limit, Cumulative Frequency)

• (Cumulative Frequency, Upper Class Limit)

Find the area of triangle ABC

Find the area of the triangle