Day 6
Intro to Engineering
Allen Sam
6-18-18
Activity 3.4










Conclusion
1.    Why is placement of your dimensions so important?
 The placement of a dimension determines what side a measurement goes to, so making sure the placements of the measurements represent the dimension of the right sides is important.

2.    Why do designers need to fully dimension a part?
 Engineers need to fully dimension a part for builders to know all the shapes and sizes of it.

3.    What does it mean when a sketch is over dimensioned? 
Over dimensioned means that a sketch has too many measurements that are not needed because they are implicitly there already.

Activity 3.5




1.      How can statistics of a product’s dimensions be used to assess the quality of the product?
The statistics can determine whether a product is accurate or not. With a product, less standard deviation is usually better because the product is more consistent.

2.      In which, phase(s) of a design process might statistics be most useful? Why?
The statistics are most useful in the evaluate solution stage because you can analyze the consistency of the product and determine whether the product attains its goal to a certain degree.
Activity 3.7

Conclusion
1. Describe the difference between population standard deviation and sample standard deviation. Describe a scenario in which you would use each.
Population standard deviation is the measure of variation in a group of people when the population is known. However, sample standard deviation is the estimation of the variation in data even though the data is known for a sample of a population.
2. Which type of standard deviation (population or sample) is displayed when the Data Analysis Tool is used within Excel?
Both types of deviation are used in the Data Analysis Tool in Excel. But, population standard deviation is mainly used by the Analaysis Tool
3. How do the statistics that you calculated using Excel compare to the statistics that you calculated by hand for the connector depth data?
The data varied a little bit. It was caused primarily by human error or rounding errors.
4. Other than the calculation of statistics, how could an engineer use a spreadsheet application to increase efficiency?
An engineer can use a spreadsheet to stay more organized with all the data.

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