shes.radical
  • shes.radical
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?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
shes.radical
  • shes.radical
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.
shes.radical
  • shes.radical
@peachpi ..
anonymous
  • anonymous
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.

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shes.radical
  • shes.radical
LinReg?
anonymous
  • anonymous
do you have a graphing calculator?
shes.radical
  • shes.radical
i do not..
anonymous
  • anonymous
http://www.alcula.com/calculators/statistics/linear-regression/
anonymous
  • anonymous
did that come up with the numbers I put in?
anonymous
  • anonymous
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)
shes.radical
  • shes.radical
i just used the calculator..wow that thing is so helpful, and so are you, thank youuu sooooo very much
anonymous
  • anonymous
you will learn how to use it more efficiently if you take statistics :). It's great to use
shes.radical
  • shes.radical
but wait..what about Part C?
anonymous
  • anonymous
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
anonymous
  • anonymous
you put in y=5x+2 and not y=2x+5 right?. the site gives it backwards
shes.radical
  • shes.radical
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 .-.
shes.radical
  • shes.radical
i think: y= the number of units slope= .....idk..
anonymous
  • anonymous
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?
shes.radical
  • shes.radical
but the slope is 2+5
shes.radical
  • shes.radical
er, thats what the website gave me.....y=2+5x
anonymous
  • anonymous
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
shes.radical
  • shes.radical
ohhhhhhhhhh, so then slope represents the number of unit outputs per worker..right?
anonymous
  • anonymous
yep!
shes.radical
  • shes.radical
too bad i can only give you 1 medal Dx you're a life saver!! thank you so much
anonymous
  • anonymous
haha np! glad I could help
shes.radical
  • shes.radical
i have 1 more question..er half of it since i answered the first part..up for it? @helpppppppppp
anonymous
  • anonymous
i'll try my best :)
shes.radical
  • shes.radical
cool ima post it separately though, ill tag you
anonymous
  • anonymous
ok

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