Straighterline Introduction to Statistics
58 correct solutions.
Straighterline Introduction to Statistics
58 correct solutions.
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 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
, Straighterline Introduction to Statistics
58 correct solutions.
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
Visual display and numerical summary for a single quantitative variable - ANSWER histogram or stemplot
and descriptive statistics
Visual display and numerical summary for C->C - ANSWER Two way table and conditional percentages
Visual display and numerical summary for C->Q - ANSWER Side by side box plots and descriptive
statistics
Visual display and numerical summary for Q->Q - ANSWER Scatterplot and correlation coefficient (r)
Standard Deviation Rule - 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) - ANSWER Middle 50% of the data
58 correct solutions.
Straighterline Introduction to Statistics
58 correct solutions.
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 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
, Straighterline Introduction to Statistics
58 correct solutions.
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
Visual display and numerical summary for a single quantitative variable - ANSWER histogram or stemplot
and descriptive statistics
Visual display and numerical summary for C->C - ANSWER Two way table and conditional percentages
Visual display and numerical summary for C->Q - ANSWER Side by side box plots and descriptive
statistics
Visual display and numerical summary for Q->Q - ANSWER Scatterplot and correlation coefficient (r)
Standard Deviation Rule - 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) - ANSWER Middle 50% of the data
