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Straighterline Introduction to Statistics
Exam 2025 (Actual Exam) Questions with
verified Answers (Latest Update 2025)
UPDATE!!
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
, 2
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
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
What type of variable?:
Temperature - (ANSWER)Interval
What type of variable?:
Income - (ANSWER)Ratio
Visual display and numerical summary for a single categorical variable -
(ANSWER)pie chart or bar chart
and category percentages
Straighterline Introduction to Statistics
Exam 2025 (Actual Exam) Questions with
verified Answers (Latest Update 2025)
UPDATE!!
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
, 2
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
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
What type of variable?:
Temperature - (ANSWER)Interval
What type of variable?:
Income - (ANSWER)Ratio
Visual display and numerical summary for a single categorical variable -
(ANSWER)pie chart or bar chart
and category percentages
