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chrisGA

  • one year ago

A student is assessing the correlation between the number of workers in a factory and the number of units of output produced daily. The table below shows the data: Number of workers (x) 0 10 20 30 40 50 60 70 80 90 Number of units of output (y) 2 52 102 152 202 252 302 352 402 452 Part A: Is there any correlation between the number of workers in a factory and the number of units of output produced daily? Justify your answer. (4 points) Part B: Write a function which best fits the data. (3 points) Part C: What does the slope and y-intercept of the plot indicate? (3 points)

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  1. wmj259
    • one year ago
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    Do you notice any trend from the table as you move from left to right?

  2. chrisGA
    • one year ago
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    yes for the X it increase by 10

  3. wmj259
    • one year ago
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    That is correct. But I meant are both sets of numbers increasing x's and y's? Is one row increasing while the other is decreasing? Are both rows decreasing? Are both rows growing?

  4. chrisGA
    • one year ago
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    both is increasing

  5. wmj259
    • one year ago
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    So if you add another worker to the factory, what will happen to the output?

  6. chrisGA
    • one year ago
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    it will continue to increase

  7. wmj259
    • one year ago
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    So do you see any relation between the number of workers and output?

  8. chrisGA
    • one year ago
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    yes i do

  9. wmj259
    • one year ago
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    Then that will be your answer to Part A. Part B :

  10. wmj259
    • one year ago
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    Do you have a graphing calculator?

  11. chrisGA
    • one year ago
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    no

  12. wmj259
    • one year ago
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    You are at a disadvantage then, You can either go by hand to find a linear regression line of best fit, or you can use EXCEL.

  13. chrisGA
    • one year ago
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    is there a site i can use

  14. wmj259
    • one year ago
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    http://www.alcula.com/calculators/statistics/linear-regression/

  15. chrisGA
    • one year ago
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    okk thx

  16. chrisGA
    • one year ago
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    can we go to part C

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