STRAIGHTERLINE INTRODUCTION TO STATISTICS EXAM QUESTIONS WITH COMPLETE SOLUTIONS GUARANTEED PASS BRAND NEW 2025.

STRAIGHTERLINE INTRODUCTION TO STATISTICS EXAM
QUESTIONS WITH COMPLETE SOLUTIONS GUARANTEED PASS
BRAND NEW 2025



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

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

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

, Visual display and numerical summary for Q->Q - CORRECT
ANSWER - >Scatterplot and correlation coefficient (r)

Standard Deviation Rule - CORRECT ANSWER - >Approximately
68% of observations fall within 1 sd of the mean,
95% within 2 sd,
99.7% (or virtually all) within 3 sds

Interquartile Range (IQR) - CORRECT ANSWER - >Middle 50% of
the data
IQR= Q3-Q1

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