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(Solved): ×ž×•×’×Ÿ ×¨ (a) Stop After Adding Value Of The Correlation? Why U Matter Where The Two Points Are Lo...
solve 2.58 without using R software
×ž×•×’×Ÿ ×¨ (a) Stop after adding value of the correlation? Why u matter where the two points are located? (b) Make a lower-left to upper-right pattern of 11 with correlation about = 0.8. (You can drag po or down to adjust r after you have 12 points.) Ma rough sketch of your scatterplot. (c) Make another scatterplot, this time with 11 points a vertical stack at the left of the plot. Add one point far the right and move it until the correlation is close to 0.8 Make a rough sketch of your scatterplot. (d) Make yet another scatterplot, this time with 12 points in a curved pattern that starts at the lower left, rises to the right, then falls again at the far right. Adjust the points up or down until you have a quite smooth curve with correlation close to 0.8. Make a rough sketch of this scatterplot also. 2.58 An interesting set of data. Make a scatterplot of the following data: M INTER x 1 2 3 4 10 10 Y 1 3 3 5 1 10 bar Verify that the correlation is about 0.5. What feature of the data is responsible for reducing the correlation to this value despite a strong straight-line association between x and y in most of the observations? 2.59 Internet use and babies. Figure 2.13 (page 99) is a scatterplot of the number of births per 1000 people rate versus Internet users per 100 people for 106 countries. In Exercise 2.34 (page 99), you described this relationshin MINBIRTH
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