STA 2023 REVIEW EXAM 1
QUESTIONS AND VERIFIED S
GRADED A+ [LATEST] 100%
GUARANTEED PASS
Statistics - CORRECT ANSWER-the science of collecting, analyzing, interpreting, and presenting
data
Categorical - CORRECT ANSWER-data that is describing using words or categories, qualitative
Quantitative - CORRECT ANSWER-data that is describing using numbers, can be averaged
Graphical - CORRECT ANSWER-categorical and quantitative
Categorical - CORRECT ANSWER-bar charts (bars do not touch) and pie charts
Quantitative - CORRECT ANSWER-histograms (bars usually touch), stem plots, box plots, and dot
plots
Numerically - CORRECT ANSWER-center and spread
Center - CORRECT ANSWER-mean, median, mode
, Mean - CORRECT ANSWER-the 'average', the balancing point, distances from the data points
always add up to zero
Median - CORRECT ANSWER-the middle ordered value, the 50th percentile, falls in (n+1)/2
position, always exactly 50% of the observations on either side of it and is not very sensitive to
outlier, robust
Mode - CORRECT ANSWER-the most frequently occurring number, the measure of center
represents the most common observations or class of observations
Spread - CORRECT ANSWER-range, variance, standard deviation, IQR
Range - CORRECT ANSWER-min-max, the measure of spread that is affected most by outliers
Variance - CORRECT ANSWER-represents the 'typical' squared distance from the mean, in
squared units, measure of spread around the mean, but its units are not the same as those of
the data points
Standard deviation - CORRECT ANSWER-represents the 'typical' distance from the mean, in
units of data, measure of spread that is smaller for distributions where the points are clustered
around the middle, cannot be negative
IQR - CORRECT ANSWER-interquartile range, Q3-Q1 where Q3= 75th percentile (the median of
the 'top' half) and Q1= 25th percentile (the median of the 'bottom' half), gives the spread of the
central (middle) 50% of the data set
Outliers - CORRECT ANSWER-any observations that are significantly far away from the rest of
the data points
Skewed right - CORRECT ANSWER-mean->median->mode
QUESTIONS AND VERIFIED S
GRADED A+ [LATEST] 100%
GUARANTEED PASS
Statistics - CORRECT ANSWER-the science of collecting, analyzing, interpreting, and presenting
data
Categorical - CORRECT ANSWER-data that is describing using words or categories, qualitative
Quantitative - CORRECT ANSWER-data that is describing using numbers, can be averaged
Graphical - CORRECT ANSWER-categorical and quantitative
Categorical - CORRECT ANSWER-bar charts (bars do not touch) and pie charts
Quantitative - CORRECT ANSWER-histograms (bars usually touch), stem plots, box plots, and dot
plots
Numerically - CORRECT ANSWER-center and spread
Center - CORRECT ANSWER-mean, median, mode
, Mean - CORRECT ANSWER-the 'average', the balancing point, distances from the data points
always add up to zero
Median - CORRECT ANSWER-the middle ordered value, the 50th percentile, falls in (n+1)/2
position, always exactly 50% of the observations on either side of it and is not very sensitive to
outlier, robust
Mode - CORRECT ANSWER-the most frequently occurring number, the measure of center
represents the most common observations or class of observations
Spread - CORRECT ANSWER-range, variance, standard deviation, IQR
Range - CORRECT ANSWER-min-max, the measure of spread that is affected most by outliers
Variance - CORRECT ANSWER-represents the 'typical' squared distance from the mean, in
squared units, measure of spread around the mean, but its units are not the same as those of
the data points
Standard deviation - CORRECT ANSWER-represents the 'typical' distance from the mean, in
units of data, measure of spread that is smaller for distributions where the points are clustered
around the middle, cannot be negative
IQR - CORRECT ANSWER-interquartile range, Q3-Q1 where Q3= 75th percentile (the median of
the 'top' half) and Q1= 25th percentile (the median of the 'bottom' half), gives the spread of the
central (middle) 50% of the data set
Outliers - CORRECT ANSWER-any observations that are significantly far away from the rest of
the data points
Skewed right - CORRECT ANSWER-mean->median->mode
