A tax based on the retail selling or rental price of tangible personal property is known

Statistics 1100 Week 1 01/27/2016 ▯ Stem-and-Leaf Display ▯ Histogram for exam data (C2, Exam Scores)  How many classes to use o <50 observations 5-10 classes  ex: sample size: 25 (n)  #classes 5-10  What is the range o Largest observation – smallest observation = range  88.40-21.10 but DON’T WANT DECIMALS  90 – 20 = 70 (good whole number)  Width of class interval o Range/ number of classes = class width  70 / 7 = 10  Class frequency o # of observations in class ▯ ▯ Histogram (Frequency/ # of observations) with 7 classes  Range = 90- 20= 70  Width= 10  Classes= 7 o No gaps in histogram like bar chart!! ▯ ▯ Shapes of Histogram  Symmetrical  Positively skewed  Negatively skewed  Bell-shaped ▯ ▯ Relative Frequency Hisogram with 7 classes  Class relative frequency= class frequency/sample size o Class frequency =1 sample size= 25 o 1/25= .04 (relative frequency) ▯ ▯ Histogram with 5 classes  40/5 = 14 class width  ▯ Histogram with 6 classes  20-92 o range 72 o 72/6= 12 class width ▯ ▯ Stem and Leaf Display  2 | 1