Right side Left side Click # 0 -00.001 -00.003 1 01.259 00.728 2 02.641 01.631 3
ID: 895456 • Letter: R
Question
Right side Left side
Click #
0 -00.001 -00.003
1 01.259 00.728
2 02.641 01.631
3 03.951 02.498
4 05.304 03.315
5 06.540 04.097
6 07.879 04.890
Plot a linear trendline and display the linear equation and the R-squared values below with three significant figures for left side balance and right side balance.
Slope, y-intercept, R-squared
On Average which balance dispenced more powder when clicking the 1 g dispense button?
A. Left B. Right C. Both were the same D. Cannot tell from the data collected
Based ipon the visually inspecting the trendline as it passes through the data points and examing the values for R^2 for each balance which balance had a smaller variability in its 1 g dispense operation?
A. Left B. Right C. Both were the same D. Cannot tell from the data collected
Explanation / Answer
Copy these data in a Excel file and create a plot.
left
delivered
right
delived
0
-0.001
0.000
-0.003
0.000
1
1.259
1.260
0.728
0.731
2
2.641
1.382
1.631
0.903
3
3.951
1.310
2.498
0.867
4
5.304
1.353
3.315
0.817
5
6.540
1.236
4.097
0.782
6
7.879
1.339
4.890
0.793
average
1.313
0.816
std dev
0.056
0.062
slope
1.317
1.211
intercept
-0.011
-0.024
RSQ
1.000
1.000
which balance dispenced more powder when clicking the 1 g dispense button?
A, supposing the balance is calibrated and the dispenser has a problem.
which balance had a smaller variability in its 1 g dispense operation?
A, in absolute and especially in relative values, (look at std dev)
left
delivered
right
delived
0
-0.001
0.000
-0.003
0.000
1
1.259
1.260
0.728
0.731
2
2.641
1.382
1.631
0.903
3
3.951
1.310
2.498
0.867
4
5.304
1.353
3.315
0.817
5
6.540
1.236
4.097
0.782
6
7.879
1.339
4.890
0.793
average
1.313
0.816
std dev
0.056
0.062
slope
1.317
1.211
intercept
-0.011
-0.024
RSQ
1.000
1.000
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