Question: 4.69 Age and Text Messages The scatterplot shows the rela- tionship between age and number of text messages sent in a day. Comment on the

4.69 Age and Text Messages The scatterplot shows the rela- tionship between age and number of text messages sent in a day. Comment on the appropriateness of linear regression. (Source: StatCrunch: Responses to survey How often do you text? Owner: Webster West) Send = 73.98 - 1.556 Age 300 250 200 . . 150 Send 100 50 0 -50 20 30 40 50 60 70 10 Age

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6. It is what the person has previously done for the group that is the deciding factor.

3. It is the commitment you show that is the deciding factor.

4. It is the principle of equality (according to very specific criteria of equality) that is crucial.