For a given data set, there are nine deciles, denoted by D 1 , D 2 ,
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For a given data set, there are nine deciles, denoted by D1, D2, ???, D9, which separate the sorted data into 10 groups, with about 10% of the values in each group. There are also four quintiles, which divide the sorted data into 5 groups, with about 20% of the values in each group. (Note the difference between quintiles and quantiles, which were described earlier in this section.)
a. Using the movie budget amounts in Table 3-4 on page 116, find the deciles D1, D7, and D8.
b. Using the movie budget amounts in Table 3-4, find the four quintiles.
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