I hope everyone is safely enjoying the snowfall.
The quiz on Tuesday will cover the 68-95-99.7 Rule (a.k.a., Empirical Rule).
On Thursday, we discussed an additional example of the 68-95-99.7 Rule (Section 3.2). This rule is very important will be discussed and used several more times during the course. We also calculated variance and standard deviation of a set of quantitative data (Section 3.2). We also showed how to determine if a particular piece of data is an outlier using both modified boxplot and using the IQR definition of outlier (Section 3.5). Lastly, we started to explain how to find a systematic sample from a population (Section 1.3). Keep in mind that a systematic sample is not a random sample. We will discuss this sampling method and stratified sample on Tuesday (Section 1.3). We will also cover Section 2.2 on Tuesday and start Chapter 4.
For Chapter 4, we will be using the following TI83/84 procedures:
How to make a scatterplot:
http://stats.jjw3.com/math1431/ti83scatter.htm
How to calculate the correlation coefficient, r:
http://stats.jjw3.com/math1431/ti83corCoeff.htm
How to find the least squares regression line:
http://stats.jjw3.com/math1431/ti83lsq.htm
Note: I made changes to the TI83/84 calculator instruction page.
At this point, you should be able to complete the following assignment:
Section 3.2: #33, 35, 39, 41
