Data: Usually, in the engineering environment, the data are almost always samples, that have been selected from real populations by one of three ways: retrospective studies based on historical data, observational studies or designed experiments. In this project, each group will collect their own continuous data by themselves to be familiar with the method of collecting data.

Q1:

You are required to collect a real data set from one population for the purpose of applying what you have studied from the course (the course is Probability and Statistics for Engineering and the Sciences, the author is walpole 10th ed chapter 1,2,3,4,5,and 6).

[Note: You have to collect the data by yourselves. It should be measurable continuous data]. Answer the following questions, in the underneath table, based on your data collection:

1. Identify experiment you have chosen, and what is/are the population(s) you have decided to study? 2. Explain what data in details you have collected, and the unit and accuracy you have used.

3. What tools or devices you used for collecting and measuring the data.

4. List the procedures and conditions, and assumptions you have used for collecting the data to increase the precise of the data, and the consistence between the data collectors, and to keep it random [Methodology].

5. What is the sample size? Why and how do you calculate it? How do you guarantee the randomness of the data collecting?

6. Collect the observations. List your set of data in the below table.

7. Attach photos about this data collection process and the used device. Write a meeting minutes.

Solve all following questions by calculations and by Minitab. a. Calculate all sample statistics; mean, median, mode, trimmed mean, range, variance and standard deviation. b. Display the data in an empirical distribution form and charts (i.e. stem and leaf plot, relative frequency distribution and histogram). c. Construct a box and whisker plot, including the fences. d. Construct a 99% confidence interval on the mean that you have conducted this experiment for it.

this is the table:

1.

Experiment

Population(s)

2. Data

Description:

Unit:

Accuracy:

3.

Tools

4.Procedures/ Conditions

1-

2-

3-

4-

5-

Assumption

1-

2-

3-

4-

5.Sample

Size:

Randomness:

1-

2-

6. The observations (i.e. data set) are:

* Statistical Calculations: