Straighterline Introduction to Statistics Exam Questions and Answers[/Latest Update 2025

Straighterline Introduction to Statistics Exam Questions and Answers[/Latest Update 2025 Four steps in the process of statistics - Correct Answer 1. Producing Data 2. Exploratory Data Analysis 3. Probability 4. Inference Categorical variable - Correct Answer places individuals into one of several groups Two types: nominal and ordinal Quantitative Variable - Correct Answer represents a measurement or a count Two types: Interval and ratio Nominal Variable - Correct Answer categorical variables where there is no natural order among the categories Ordinal variable - Correct Answer categorical variables where there is natural order among the categories Interval Variable - Correct Answer a measurement or count for which it makes sense to talk about the difference between values, but it does not make sense to talk about the ratio between values; 0 does not represent the absence of quanitity Ratio Variable - Correct Answer quantitative variables for which it makes sense to talk about the difference between values AND the ratio between values; 0 represents the absence of quantity What type of variable?: eye color - Correct Answer nominal What type of variable?: socioeconomic status with categories low, med, high - Correct Answer Ordinal What type of variable?: Temperature - Correct Answer Interval What type of variable?: Income - Correct Answer Ratio Visual display and numerical summary for a single categorical variable - Correct Answer pie chart or bar chart and category percentages Visual display and numerical summary for a single quantitative variable - Correct Answer histogram or stemplot and descriptive statistics