Lab 1: The metric system â measurement of length and weight

More documents

Recommendations

Info

Select the AVERAGE function from the scroll box on the left of this dialog box – asecond dialog box will open. In the text box following “Number 1” make sure that youlist the range of cells that you want to use to compute the average. For example, if“B2:B12” is listed in this text box, the function will compute an average using valuespresent in cells B2 – B12. Select OK. The function will now compute the average ormean for selected cells.Go to another cell below the “Height” column. Highlight this cell and then click on the“=” sign on the upper left corner of the Excel toolbar – a dialog box will appear.This time select the MEDIAN function from the scroll box on the left of this dialog box.Repeat the procedure outlined above to calculate the median for the height data.Go to another cell below the “Height” column. Highlight this cell and then click on the“=” sign on the upper left corner of the Excel toolbar – a dialog box will appear.This time select the STDEV function from the scroll box on the left of this dialog box.Repeat the procedure outlined above to calculate the standard deviation for the heightdata.Using the procedure outlined above determine the mean, median, and standard deviationfor the leg length data. Label cells so it is clear what the descriptive statistics refer to.Save the workbook to a folder indicated by your instructor.3. Relationship between leg length and heightUsing the class data collected above and Microsoft Excel, produce a graph that illustratesthe relationship between leg length and overall height of an individual. Plot the length ofthe leg (cm) on the x-axis and the overall height of the individual on the y-axis. Use thescatter plot feature of MS Excel and fit a line to the data. Print a copy of the graph andgive it to your instructor at the end of class (one copy per group). Save your work. Ageneral procedure for making scatter plots using MS Excel is outlined below.• Highlight all cells containing information. Then click Insert (in themain menu), then Chart.• Choose XY (Scatter) as a chart type. Then click Next.• On the next screen, click Next.• Fill in the Chart, X-axis, and Y-axis titles – include the units ofmeasurement in parentheses.• Click the tab labeled Legend. Uncheck the box labeled Show legend.• Click Next.• Click Finish
At this point you may note that the y-axis scale for your graph includes a range wherethere are no data points present. For example the shortest individual in the class was 1.58meters, yet the y-axis starts at zero. To correct this do the following:• Double-click on the y-axis.• On the dialog box that opens click the tab labeled Scale.• Change the minimum value to an appropriate number – in the aboveexample 1.50 meters would be appropriate.• Click OK• You may also have to adjust the scale of the x-axis in similar fashion.To add the line of best fit (trend line):• Choose Chart from the top menu bar. (Make sure that the graph ishighlighted/selected by box bullets on the perimeter. You can do thisby clicking anywhere on the graph.)• Click Add Trendline.• The Linear type of trend line should already be selected. This is whatyou need.• To get the R-Square value to print on your graph, click the tab labeledOptions. Then check the box titled Display R-Squared Value onChart.• Click OK.Note that R 2 indicates the strength of the relationship between the two variables. Valuesof R 2 ranges from 0 to 1.0. As the value of R 2 increases, the relationship is gettingstronger, with a value of 1.00 indicating a perfect correlation. Conversely, as R 2approaches 0, the correlation is weaker, with a score of 0 indicating the absence of anylinear relationship between the variables.4. Measurement of weightWeigh yourself either using a metric scale or a English scale. Enter your weight inkilograms (1 kg = 2.2 lb.) on the chalkboard or on a chart provided by your lab instructor.5. Descriptive statistics for class weightUsing the same MS Excel workbook you started earlier, create a new column for weightand enter the class values. Determine the mean, median, and standard deviation for thisvariable. Save your work. Print a copy of the Workbook and give it in to your instructorat the end of class (one copy per group).
Page 2 and 3: Table 2: Decimals of the metric sys
Page 6 and 7: 6. Relationship between overall hei
Page 8: 4. Which shows a higher degree of c

Lab 1: The metric system â measurement of length and weight

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?

Lab 1: The metric system â measurement of length and weight