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shes.radical

  • 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. Part B: Write a function which best fits the data. Part C: What does the slope and y-intercept of the plot indicate?

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  1. shes.radical
    • one year ago
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    My Answer For Part A: Yes, The more number of workers, the more units of output. That's all I got. And I think that's wrong.

  2. shes.radical
    • one year ago
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    @peachpi ..

  3. anonymous
    • one year ago
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    yes there is a correlation. If you graph it on a calculator, you will see there is a positive correlation. With the numbers in your calculator, you can run the LinReg to find the line of best fit.

  4. shes.radical
    • one year ago
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    LinReg?

  5. anonymous
    • one year ago
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    do you have a graphing calculator?

  6. shes.radical
    • one year ago
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    i do not..

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

  8. anonymous
    • one year ago
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    did that come up with the numbers I put in?

  9. anonymous
    • one year ago
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    Alright I'm making this too complicated. There's a way to use the calculator to find the equation of a line that you plotted. But with the numbers this gives you, it is linear, which means you can find the slope yourself by doing (y2-y1)/(x2-x1)

  10. shes.radical
    • one year ago
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    i just used the calculator..wow that thing is so helpful, and so are you, thank youuu sooooo very much

  11. anonymous
    • one year ago
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    you will learn how to use it more efficiently if you take statistics :). It's great to use

  12. shes.radical
    • one year ago
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    but wait..what about Part C?

  13. anonymous
    • one year ago
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    the y-intercept is when x is at 0. if you used the calculator I sent you, you should have gotten the equation y=5x+2. also you can see from the data that when x is 0, y is 2. So 2 is the y-intercept, and the slope is 5. That tells you that when there are 0 workers, there are 2 units of output

  14. anonymous
    • one year ago
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    you put in y=5x+2 and not y=2x+5 right?. the site gives it backwards

  15. shes.radical
    • one year ago
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    yeah i accidently put in y=2x+5 instead of y=2+5x xD i got it though, thats right. but Part C..i still dont get that part .-.

  16. shes.radical
    • one year ago
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    i think: y= the number of units slope= .....idk..

  17. anonymous
    • one year ago
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    slope is: number of units/ number of workers so if the slope is 5 then wouldn't that mean there are 5 units output for every worker?

  18. shes.radical
    • one year ago
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    but the slope is 2+5

  19. shes.radical
    • one year ago
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    er, thats what the website gave me.....y=2+5x

  20. anonymous
    • one year ago
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    y=2+5x is the same as y=5x+2 y=mx+b is the slope intercept form where m=slope, so the slope would be 5

  21. shes.radical
    • one year ago
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    ohhhhhhhhhh, so then slope represents the number of unit outputs per worker..right?

  22. anonymous
    • one year ago
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    yep!

  23. shes.radical
    • one year ago
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    too bad i can only give you 1 medal Dx you're a life saver!! thank you so much

  24. anonymous
    • one year ago
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    haha np! glad I could help

  25. shes.radical
    • one year ago
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    i have 1 more question..er half of it since i answered the first part..up for it? @helpppppppppp

  26. anonymous
    • one year ago
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    i'll try my best :)

  27. shes.radical
    • one year ago
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    cool ima post it separately though, ill tag you

  28. anonymous
    • one year ago
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    ok

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