A dentist records the number of cavities in 100 children from a school. The information obtained is. 1 answer below »

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A dentist records the number of cavities in 100 children from a school. The information obtained is summarized in the following table: No. of cavities fi ni 0 25 0.25 1 20 0.2 2 x z 3 15 0.15 4 y 0.05

1. Complete the table to obtain the values of x, y, z.

2. Create a pie chart.

3. Calculate the average number of cavities.