Response: total cost; explanatory: number of items. Scatterplot: linear, positive direction with lots of variation
Response: items produced; explanatory: hours worked. Scatterplot: positive direction, linear (with perhaps some curvature for long hours), and moderate variation
Response: time; explanatory: weight. Scatterplot: negative direction, probably linear with lots of variation in the times
Response: gallons left; explanatory: number of miles. Scatterplot: negative direction, linear, with small variation around the trend
Response: price change; explanatory: number recommending. Scatterplot: little or no pattern
Positive association, but weak
It increases the correlation. The correlation would decrease. ...