Data can be classified as either numerical or categorical. Sets of data that contain two variables are called bivariate data and those that contain more than two variables are called multivariate data. Therefore, the number of cars sold by a car salesman during one week is an example of univariate data. That is, the information deals with only one quantity that changes.
Types of data Univariate data are data that contain one variable. b What is the value of the mean? 4 a Use CAS to display the median of the data set on your histogram. What does this tell you about theĭistribution of this data set? 3 a Use CAS to display the mean of the data set on your histogram. Please refer to the Resources tab in the Prelims section of your eBookPLUS for a comprehensive step-by-step guide on how to use your CAS technology.Ģ Comment on the shape of the histogram. Use CAS to draw a histogram displaying this data set. 1 The following data set details the age of all of the guests at a wedding. They show the shape and distribution of a data set, and can be used to gather information about the data set, such as the range of the data set and the value of the median (middle) data point.
1.4 Dot plots, frequency tables and histograms, and bar charts 1.5 Describing the shape of stem plots and histograms 1.6 The median, the interquartile range, the range and the mode 1.7ġ.8 The mean of a sample 1.9 Standard deviation of a sample 1.10 Populations and simple random samples 1.11 The 68–95–99.7% rule and z-scores 1.12 Reviewġ.1 Kick off with CAS Exploring histograms with CAS Histograms can be used to display numerical data sets.
0 kommentar(er)
