Transcription of Chapter 2: Frequency Distributions and Graphs
1 Chapter 2: Frequency Distributions and GraphsDiana PellSection : Frequency TablesAfrequency distributionis the organization of raw data in table form, using classes Frequency DistributionsExercise army inductees were given a blood test to determine their blood data set isConstruct a Frequency distribution for the a Frequency distribution , a relative Frequency distribution , and a cumu-lative Frequency distribution for the data do the following problem from the type of Frequency distribution that can be constructed uses numerical data and is calledagrouped Frequency distribution . In a grouped Frequency distribution , the numerical dataare divided into deciding on classes, here are some useful guidelines:1. Try to keep the number of classes between 5 and Make sure the classes don t Don t leave out any numbers between the lowest and highest, even if nothing falls into aparticular Make sure the range of numbers included in a class is the same for each data represent the record high temperatures for each of the 50 states indegrees Fahrenheit.
2 Construct a grouped Frequency distribution for the data using 7 one math class, the data below represent the number of hours each studentspends on homework in an average week. Construct a grouped Frequency distribution for thedata using six : Picturing Distributions of DataBar Graphs and Pie ChartsExercise marketing firm Deloitte Retail conducted a survey of grocery shoppers. Thefrequency distribution below represents the responses to the survey question How often do youbring your own bags when grocery shopping?ResponseFrequencyAlways10 Never39 Frequently19 Occasionally32a) Draw a vertical bar graph to represent the ) Draw a pie chart for the marketing firm Deloitte Retail conducted a survey of grocery shoppers. Thefrequency distribution below represents the responses to the survey question How often do youbring your own bags when grocery shopping?
3 Draw a pie chart to represent the data 1:7 APareto chartis a bar graph with the bars arranged in Frequency order. Pareto charts makesense only for data at the nominal level of Dioxide Emissions8
