Refer to the income attribute of the five customers in Table 2.1, before preprocessing. a. Find the

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Refer to the income attribute of the five customers in Table 2.1, before preprocessing.Customer Zip Gender Income ID 1001 1002 1003 1004 1005 10048 M J2S7K7 F 90210 6269 M 55101 F Age Marital

a. Find the mean income before preprocessing.

b. What does this number actually mean?

c. Now, calculate the mean income for the three values left after preprocessing. Does this value have a meaning?

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