STP 231 Lecture Notes - Lecture 3: Sample Size Determination, Histogram, Unimodality
1 Sep 2015
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Books: textbooks are in library for up to 2 hours of use, unable to check out the text book to keep forever, library near parking lot #2. Data requirements for grouping: used when when you can group items with a single value, usually used when there is a relatively few data values. The area of the histogram is also important representation of the frequency of the data. Formula: unit = (f/n)/(class width, total area of the histogram will be 1 or 100% Then add last digit of the number on as the leaf (has only one digit) 13: write stems in order vertically starting from the smallest, write leaf to the right of the stem. It is also possible to split the stem into two parts and write the leaves on both tens stem: leaves: ones sides of the stem. Bimodal: two peaks, multimodal, 3 or more peaks.
