Show allwork.
Be sure toattach all output from Excel/SPSS.
DescribingData
1) The following is a list of prices (in dollars) of birthdaycards found in various drug stores:
|
2.45 |
1.20 |
0.85 |
1.33 |
2.25 |
|
2.25 |
2.09 |
2.99 |
1.00 |
0.88 |
|
1.42 |
2.36 |
2.15 |
2.85 |
1.52 |
|
1.99 |
2.38 |
0.85 |
2.22 |
2.75 |
a. UsingExcel/SPSS find the mean, median, mode, range, variance and standard deviationof the data. Attach your output from Excel/SPSS.
b. Using Excel/SPSS, construct a frequencyhistogram of the data set. Use the guidelines in the class notes. Provide allthe details (interval, width, etc.) on how you constructed the histogram. Makesure that you attach the histogram created by Excel/SPSS. Comment on the shapeof the frequency distribution (e.g., is the distribution skewed? Is thedistribution approximately mound-shaped and symmetric?) for the data set basedon your histogram.
c. Based on the results in part a, constructthe intervals and for the data set. Be sure to show your interval below.Based on the results in part b what percentage of the measurements for the dataset falls in each interval?
2) Asemiconductor manufacturer produces printed circuit boards that are sampled todetermine the thickness of their copper plating. The following statementscreate a data set named Trans, whichcontains the plating thicknesses (Thick) of 50boards:
|
3.412 |
3.45 |
3.551 |
3.451 |
3.60 |
3.462 |
3.586 |
3.645 |
3.252 |
3.62 |
|
3.606 |
3.634 |
3.852 |
3.56 |
3.342 |
3.341 |
3.444 |
3.774 |
3.632 |
3.199 |
|
3.71 |
3.654 |
3.723 |
3.981 |
3.934 |
3.708 |
3.934 |
3.315 |
3.762 |
3.223 |
|
3.469 |
3.481 |
3.515 |
3.535 |
3.46 |
3.575 |
3.488 |
3.515 |
3.484 |
3.482 |
|
3.517 |
3.483 |
3.467 |
3.467 |
3.502 |
3.471 |
3.516 |
3.474 |
3.5 |
3.466 |
a. Using Excel/SPSS find the mean, median,mode, range, variance and standard deviation of the data. Attach your outputfrom Excel/SPSS.
b. Basedon the results in part a, construct the intervals and for the data set. Be sure to show your interval below.What percentage of the measurements for the data set falls in each interval?Compare the intervals , and . Explain why the results are different.
Thankyou!
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