Vash Education: Statistics

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Histograms

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1. Which method gives the frequency density of a histogram?

10 points

Class width/frequency

Frequency/class width

Area of the graph

Width of the bar

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2. On which axis is the frequency density plotted on?

10 points

y-axis

x-axis

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3. Fill in the blanks. Histograms are used to represent ___ data that’s as been divided into classes called ___.

10 points

Discreet, groups

Discreet, classes

Continuous, bins

Continuous, groups

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4. Find the frequency density to fill in the space.

10 points

5. Find the frequency density for the class from 6 to 8.

10 points

6. Given that the frequency density for the class 0<t<100 is 0.24, find the frequency.

10 points

7. A class is measuring their heights and writes their results in a table. Find the missing frequency density.

10 points

8. This histogram shows the speeds of 450 cars. Find out how many cars had a speed greater than 35mph.

10 points

9. The graph below shows the ages of all the people living in a village. Find out the number of people who are between the ages of 20 and 30.

10 points

10. Using the graph in number 9, find out the frequency density for the people between the age of 90 and 100 if the total population of the village is 440.

10 points

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