The side by side stemplot - Study guides, Class notes & Summaries

WGU Statistics and Probability Two types of displays for Categorical variables - ANS Pie Chart, Bar Chart Numerical summaries for Categorical variables - ANS Category (group) percentages Two types of displays for Quantitative variables - ANS Histogram, Stemplot Numerical summaries for Quantitative variables - ANS Descriptive Statistics (Measure of Center plus Measure of Spread If distribution is symmetric, with no outliers, measure of center...

The probability of any event is between one and o. What is the equation for this? - ANS For any event A, 0 ≤ P(A) ≤ 1. The sum of all possible probabilities is___? - ANS One, the equation is :P(S) = 1 What is the complement rule? or the probability that an event does not occur is 1 minus the probability that it does occur. - ANS P(not A) = 1 - P(A) In probability, "OR" means either one or the other or both. - ANS P(A or B) = P(event A occurs or event B ...

The stemplot below displays the grades (out of 30) that 26 students received on a quiz. Which of the following boxplots correctly displays the distribution of quiz grades? - Correct Answers (The first option. There should be four outlier dots.) High school students were asked if they preferred fiction or nonfiction books. The results are displayed below. Which of the following statements is true, according to the graph? - Correct Answers The percentage of preference for each type of boo...

WGU STatistics Test nominal variables - ANS Categorical variables that there is no natural order among the categories ordinal variable - ANS Categorical variables where there is natural order among the categories (low-high) interval - ANS A measurement which makes sense to talk about the difference between values but not the ratio between values ratio - ANS Quantitive variables where is makes sense to talk about the difference in ratios. (Income, weigh...

What is a dotplot? - ANSWER-A graphical display which shows "dots" for each point. It's good for categorical data- ie data classified into categories. What's the difference between categorical and quantitative data? - ANSWER-Categorical data fits into various categories; whereas, quantitative data has numerical values associated with it. What is a bar chart? - ANSWER-A display for categorical data which indicates frequencies or percents for each category. What are histograms? - ANSW...

WGU Introduction to Probability and Statistics questions and answers Three steps in Exploratory Data Analysis 1. Organize and SUMMARIZE raw data 2. DISCOVER important features and patterns and striking deviations. 3. INTERPRET findings in the context of the problem Examining Distributions exploring data obtained from one variable at a time Examining Relationships exploring data obtained from two variables at a time Distribution what values the variable takes, how often Three types o...

Four steps in the process of statistics - 1. Producing Data 2. Exploratory Data Analysis 3. Probability 4. Inference Categorical variable - places individuals into one of several groups Two types: nominal and ordinal Quantitative Variable - represents a measurement or a count Two types: Interval and ratio Nominal Variable - categorical variables where there is no natural order among the categories Ordinal variable - categorical variables where there is natural order among the categori...

Statistics final wgu academy with complete questions and answers nominal variables - Categorical variables that there is no natural order among the categories ordinal variable - Categorical variables where there is natural order among the categories (low-high) interval - A measurement which makes sense to talk about the difference between values but not the ratio between values ratio - Quantitive variables where is makes sense to talk about the difference in ratios. (Income, w...

Determine whether the data described below are qualitative or quantitative and explain why. The blood groups of A, B, AB, and O Choose the correct answer below. A. The data are qualitative because they don't measure or count anything. B. The data are qualitative because they consist of counts or measurements. C. The data are quantitative because they don't measure or count anything. D. The data are quantitative because they consist of counts or measurements. Determine whether the data d...

What is the center of distribution? correct answers - represents the typical value - half of the observations has smaller values & the other half w/ larger values What does left skewed look like? correct answers What does right skewed look like? correct answers What is variability or spread of distribution? correct answers giving the smallest & largest values, we can wish to leave off outliers What are histograms good for? correct answers to show how data distributed What does a stemplot...