Question

Fear of the dentist (or the dentist’s chair) is an emotion felt by many people of all ages. A survey of 100 individuals in five age groups was conducted about this fear, and these were the results:
a. Find the marginal totals.
b. Express the frequencies as percentages of the grand total.
c. Express the frequencies as percentages of each age group’s marginal totals.
d. Express the frequencies as percentages of those who fear and those who do not fear.
e. Draw a bar graph based on age groups.


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  • CreatedAugust 27, 2015
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