A quantitative data set has been grouped by using cutpoint grouping with equal-width classes of width 10.
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A quantitative data set has been grouped by using cutpoint grouping with equal-width classes of width 10.
a. If the midpoint of the first class is 7, what are its lower and upper cutpoints?
b. What is the class midpoint of the second class?
c. What are the lower and upper cutpoints of the third class?
d. Which class would contain an observation of 42?
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