Question

Custom problem B involves data analysis on a sample of size 30, which is best done using data analysis software. You are encouraged to use MATLAB, which can be found on all Windows computers in all ACCC computer labs on campus (see a full list here: https:laccc.uic edu/lablall). You can also download a student version for FREE here: https://webstore.illinois.edu/shop/product.aspx?zpid 3427 Another option is to use OctaveOnline (https:loctave-online.net), which uses the same syntax and has much of the same functionality as MATLAB (in my experience). Ifyou feel lost in using MATLAB, I strongly suggest to post questions to Piazza, as your classmates can help you, and it is beneficial for the rest of the class. Feel free to use another data analysis tool (such as Excel, as long it has the functionality to produce nice-looking histograms and perform basic statistical calculations). However, it is highly recommended you get comfortable using MATLAB, as later homework assignments will involve instructions using MATLAB B. A surveyor testing the accuracy of a GPS receiver records the following 30 observations of positions errors (in cm) 89.9104.0 93.7 94.4 86.015.8 95.3 90.7 88.0 121.8 97.4 95.2 101.4 98.2 97.5 11.4 101.6 103.3 97.1 78.7 85.775.0 107.5 106.6 103.0 111.5 99.8 104.4 97.3100.9 Compute the sample mean and median. [Hint: use the sort command in MATLAB.] Compute the sample standard deviation i. ii. ii. Produce a histogram plot of the data with a bin size of 10 (i.e. the first bin is 70 to 80, the second bin is 80 to 90, etc.). [Note: this can be sketched on paper or plotted using MATLAB. Either way, having the data sorted (see part i) is helpful.]

Please solve Question B fully, Thank you!

Answer 1

Before calculating the following question let us sort the data the data first:-

75,78.7,85.7,86,88,89.9,90.7,93.7,93.7,95.2,95.3,97.1,97.3,97.4,97.5,98.2,99.8,100.9,101.4,101.6,103,103.3,104,104.4,106.6,107.5,111.4,111.5,115.8,121.8