Assignments and due dates for each chapter are announced in class. Typical problems include:
3-2 page 86
2 to 24, even numbered problems
Do not calculate the mode or the midrange since we will not use either of these measures.
3-3 page 104
2 to 24, even numbered problems
Do not use formulas 3-4 or 3-5 (page 94) to compute the standard deviation. Use STATDISK or a calculator's built-in functions or a spreadsheet's built-in functions to compute the standard deviation.
3-4 page 116
2 to 14, even numbered problems
3-5 page 126
2 to 12, even numbered problems
Chapter 3-5: Exploratory Data Analysis
A box plot efficiently shows the median, quartiles and range and is easier to make than a frequency histogram. A modified box plot is an excellent method of detecting outliers.
The 5 numbers used to create a box plot are the minimum, 1st quartile boundary, median, 3rd quartile boundary and the maximum. The median separates the data into two groups of equal size.
The 1st quartile boundary separates the data between the minimum and median into two groups of equal size. The 3rd quartile boundary separates the data between the median and the maximum into two groups of equal size. Thus quartiles separate the data into four groups of equal size.