A convenience sample survey of social media, tech usage, and stimulant preferences was given to students in MS 150 Statistics at the College of Micronesia-FSM. The survey was administered via a modified Schoology quiz that was used to pose options as multiple choice questions. The quiz and questions carried zero points, there were no right or wrong answers.
The social media survey seeks to understand where the students are "living" in terms of social media. FaceBook remains the dominant social media presence for the students in MS 150 statistics.
Small underlying sample sizes make the trends harder to interpret, but in general adoption of cell phones and specifically smart phone outpaces tablet and pad adoption by students. The laptop data remains highly variable term-on-term.
Betelnut edged out coffee for the two most recent terms. The fall in the number of students reported no stimulant usage is an artifact of a small sample size spring 2017. The spring 2017 spike is anomalous and solely due to a small underlying sample size. In general betelnut usage remains around 40% of the students surveyed.
Plotting polar coordinates in Desmos and a vector addition demonstrator
In an earlier post I noted that Desmos did not directly plot polar coordinates. Not only was I incorrect, but Desmos responded to my blog to correct me! Although I had at some point seen that one could define a function f(x)=3x+5 and then have Desmos calculate f(6), I had not absorbed how this might be used to plot polar coordinates. The above works beautifully . Realizing that I could effectively program Desmos, I applied this thinking to demonstrating how to add two vectors when given the magnitudes m and the direction angles theta. The graph calculates the i and j components for the two vectors and then adds the vectors, graphically displaying the result while also providing information on the magnitude and direction of the vector sum. m1 and theta1 are the magnitude and direction angle for one of the two vectors, m2 and theta2 are the magnitude and direction for the other vector. All four are dynamically interactive and can be changed. The diagram purports to illustra
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