Conditional percentages - Study guides, Class notes & Summaries

1. When one variable causes change in another, we call the first vari- able the vari- able*. The affected variable is called the variable*. 2. A two-way table, also known as a two-way frequency table or contingency table, is used to show the relationship between two vari- ables ( C’C ); the rows show the categories of one variable, and the columns show the categories of the other variable. 3. . These represent the total number of in- stances that fall in both the corre- sponding...

Summary WGU C955 Applied Probability and Statistics All Terms and Formulas (2023 / 2024) (Verified) Basic probability: #of total come# of total outcome in the sample space 1. P(B | A): conditional probability 2. P(A and B)=P(A) • P(B): multiplication rule- independent events 3. P(A and B)= P(A) • P(B|A): multiplication rule- dependent events 4. P(A or B)= P(A) + P(B): addition rule- Disjoint 5. P(A or B)= P(A) + P(B) - P(A and B): addition rule- non-Disjoint 6. product: The result...

Histogram - when to use - ANSWER-Based on the shape of the distribution, uses mean + standard deviation OR median + IQR to describe center and spread - Larger data sets; shows shapes of distribution and potential outliers; ignores the individual data valuesl Histogram Skewed right - ANSWER-Not a symmetric distribution, the tail is on the right Standard Deviation Rule - ANSWER-68% of the data are within 1 standard deviation, 95% are within 2, 99.7% are within 3 standard deviation...

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...

Ch3 1. To examine relationships between two categorical variables, we can use: a. b. c. d. ANSWER: POINTS: DIFFICULTY: TOPICS: OTHER: counts and corresponding charts of the counts scatter plots histograms none of these choices a 1 Easy | Bloom's: Knowledge A-Head: 3-2 Relationships Among Categorical Variables BUSPROG: Analytic | DISC: Descriptive Statistics 2. Tables used to display counts of a categorical variable are called: a. crosstabs b. contingency tables c. either crosstabs ...

C955 wrap before oa question with complete solution 2023 already passedJust categorical - correct answer pie chart ( part of a whole ) or bar chart just quantitative - correct answer histogram ( for intervals) stem plot ( for exact values ) or boxplot or dot plot ( less common) categorical > categorical - correct answer contingency - (two way) table to create conditional percentages Quantitative > Quantitative - correct answer scatterplot and use correlation coefficient categor...

C784 Statistics FULL COURSE REVIEW questions and answers well illustrated. Lurking Variable - correct answers.Associated with the explanatory and the response variables that is not directly being studied. Simpson's Paradox - correct answers.Occurs when a trend or result that appears in groups of data disappears when we combine the data. Regression Analysis - correct answers.A process for estimating and analyzing the relationship between variables. Least-Squares Regress...

Lurking Variable - Associated with the explanatory and the response variables that is not directly being studied. Simpson's Paradox - Occurs when a trend or result that appears in groups of data disappears when we combine the data. Regression Analysis - A process for estimating and analyzing the relationship between variables. Least-Squares Regression Line - AKA the line of best fit. y = mx + b "rise over run" Interpolation - Using existing data along with the Least-Squares Re...

Ch3 1. To examine relationships between two categorical variables, we can use: a. b. c. d. ANSWER: POINTS: DIFFICULTY: TOPICS: OTHER: counts and corresponding charts of the counts scatter plots histograms none of these choices a 1 Easy | Bloom's: Knowledge A-Head: 3-2 Relationships Among Categorical Variables BUSPROG: Analytic | DISC: Descriptive Statistics 2. Tables used to display counts of a categorical variable are called: a. crosstabs b. contingency tables c. either crosstabs ...

1. To examine relationships between two categorical variables, we can use: a. counts and corresponding charts of the counts b. scatter plots c. histograms d. none of these choices ANSWER: a POINTS: 1 DIFFICULTY: Easy | Bloom's: Knowledge TOPICS: A-Head: 3-2 Relationships Among Categorical Variables OTHER: BUSPROG: Analytic | DISC: Descriptive Statistics 2. Tables used to display counts of a categorical variable are called: a. crosstabs b. contingency tab...