STRAIGHTERLINE INTRODUCTION TO STATISTICS QUESTIONS AND ANSWERS 2025/2026

STRAIGHTERLINE INTRODUCTION TO STATISTICS QUESTIONS AND ANSWERS 2025/2026 Four steps in the process of statistics - Answer -1. Producing Data 2. Exploratory Data Analysis 3. Probability 4. Inference Categorical variable - Answer -places individuals into one of several groups Two types: nominal and ordinal Quantitative Variable - Answer -represents a measurement or a count Two types: Interval and ratio Nominal Variable - Answer -categorical variables where there is no natural order among the categories Ordinal variable - Answer -categorical variables where there is natural order among the categories Interval Variable - Answer -a measurement or count for which it makes sense to talk about the difference between values, but it does not makesense to talk about the ratio between values; 0 does not represent the absence of quanitity Ratio Variable - 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 - Answer -nominal What type of variable?: socioeconomic status with categories low, med, high - Answer -Ordinal