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Would you expect a positive correlation,

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Presentation on theme: "Would you expect a positive correlation,"— Presentation transcript:

1 Would you expect a positive correlation,
a negative correlation, or no correlation between the two data sets? 1. The age of a used car and the asking price of the car. 2. The length of a baby at birth and the month in which the baby was born. 3. A person’s height and their shoe size. Explorations Workbook Pg 340 Susan surveyed 20 people about the price of a cleaning product she developed. She asked each person whether they would buy the cleaner at different prices. A person may answer yes or no to more than one price. Susan’s results are shown in the table. Make a scatter plot of the data. Describe the type(s) of association you see between the price and number of people who would buy at that price. Explain.

2 #23 PreAlg8 Sem2 Practice Exam Version B
Which pair of variables may show a positive association? A. x = the age of your computer y = the value of your computer B. x = the number of pets you own y = your shoe size C. x = average speed you drove on a road trip y = number of hours it took to reach your destination D. x = number of text messages you send per month y = cost of your monthly cell phone bill #36 PreAlg8 Sem2 Practice Exam Version B Which statement supports a scatterplot that shows a negative association? A. A perfect straight line of points B. A line that slopes down to the right C. A random pattern of points D. The points form a horizontal pattern #40 PreAlg8 Sem2 Practice Exam Version B Which could be an example of no association? A. A person's shoe size compared to their weight. B. Your arm span compared to your height. C. The amount of calories you consume compared to your weight. D. A person's salary compared to the number of years they went to school.


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