STRAIGHTERLINE INTRODUCTION TO STATISTICS LATEST THIS YEAR COMPLETE 50 QUESTIONS AND CORRECT ANSWERS

STRAIGHTERLINE INTRODUCTION TO STATISTICS
LATEST THIS YEAR COMPLETE 50 QUESTIONS AND
CORRECT ANSWERS


QUESTION: Nominal Variable - ANSWER-categorical variables where there is no natural order among the
categories



QUESTION: Ordinal variable - ANSWER-categorical variables where there is natural order among the
categories



QUESTION: Interval Variable - 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

Four steps in the process of statistics - ANSWER-1. Producing Data

2. Exploratory Data Analysis

3. Probability

4. Inference



QUESTION: Categorical variable - ANSWER-places individuals into one of several groups

Two types: nominal and ordinal



QUESTION: Quantitative Variable - ANSWER-represents a measurement or a count

Two types: Interval and ratio



QUESTION: 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

, QUESTION: What type of variable?:

eye color - ANSWER-nominal



QUESTION: What type of variable?:

socioeconomic status with categories low, med, high - ANSWER-Ordinal



QUESTION: What type of variable?:

Temperature - ANSWER-Interval



QUESTION: What type of variable?:

Income - ANSWER-Ratio



QUESTION: Visual display and numerical summary for a single categorical variable - ANSWER-pie chart or
bar chart

and category percentages



QUESTION: Visual display and numerical summary for a single quantitative variable - ANSWER-histogram
or stemplot

and descriptive statistics



QUESTION: Visual display and numerical summary for C->C - ANSWER-Two way table and conditional
percentages



QUESTION: Visual display and numerical summary for C->Q - ANSWER-Side by side box plots and
descriptive statistics