The scatter plot shows the number of hours worked and money spent on entertainment by each of 21 students. Also shown is the line of best fit for the data. Fill in the blanks below. 70 65 60 55 Amount of 50 45 money spent on entertainment 40 35 (in dollars) X. 30 25 20 15 10 5 6 10 12 14 16 18 20 22 Number of hours worked (a) For these 21 students, as the number of hours increases, the amount of money spent tends to ? (b) For these 21 students, there is ? correlation between the number of hours worked and the amount of money spent. (c) Using the line of best fit, we would predict that a student working 10 hours would spend approximately ? dollars.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.