C955 Applied Probability and statistics Question and answers
100% correct 2025
1. Pie chart numerical measure: per-
centages best used
When displaying
categories as parts of
the whole
2. Bar chart (bar graph) Category counts or
fre- quencies best
used when displaying
counts or fre-
quencies for each
catego- ry
individually
3. Dot Plot 5-number summary (ma
Q1, median, Q3,
max) Smaller data
set; useful to display
the distribution and
show gaps and outliers
(quantitative)
4. Stem Plot (stem-and-leaf plot) 5-number summary
(max, Q1, median,
Q3, max) Smaller data
sets; useful to display
distributions and
potential outliers; has
the advantage that it
keeps data
values displayed.
(quanti- tative)
1/
41
,C955 Applied Probability and statistics Question and answers
100% correct 2025
5. Box Plot 5-number summary
(max,
Q1, median, Q3, max)
2/
41
,C955 Applied Probability and statistics Question and answers
100% correct 2025
Larger data sets;
shows the
5-number summary,
shows spread; ignores
in- dividual
data values and the
num- ber of values
(allowing to compare
sets of ditterent sizes)
6. Histogram Based on the shape of
the
distribution, uses
mean + standard
deviation OR median
+ IQR to describe
center and spread
Larger data sets;
shows shapes of
distribution and
potential outliers;
ignores the individual
data values
7. slope-intercept form y = mx + b, where
m is slope of the line
and b is the y-
intercept.
8. Standard Deviation Rule: (68-95-99.7 Rule)
68% of the data is
within 1 standard
3/
41
, C955 Applied Probability and statistics Question and answers
100% correct 2025
deviation of the mean.
95% of the data is
within 2 standard
deviations of the
4/
41
100% correct 2025
1. Pie chart numerical measure: per-
centages best used
When displaying
categories as parts of
the whole
2. Bar chart (bar graph) Category counts or
fre- quencies best
used when displaying
counts or fre-
quencies for each
catego- ry
individually
3. Dot Plot 5-number summary (ma
Q1, median, Q3,
max) Smaller data
set; useful to display
the distribution and
show gaps and outliers
(quantitative)
4. Stem Plot (stem-and-leaf plot) 5-number summary
(max, Q1, median,
Q3, max) Smaller data
sets; useful to display
distributions and
potential outliers; has
the advantage that it
keeps data
values displayed.
(quanti- tative)
1/
41
,C955 Applied Probability and statistics Question and answers
100% correct 2025
5. Box Plot 5-number summary
(max,
Q1, median, Q3, max)
2/
41
,C955 Applied Probability and statistics Question and answers
100% correct 2025
Larger data sets;
shows the
5-number summary,
shows spread; ignores
in- dividual
data values and the
num- ber of values
(allowing to compare
sets of ditterent sizes)
6. Histogram Based on the shape of
the
distribution, uses
mean + standard
deviation OR median
+ IQR to describe
center and spread
Larger data sets;
shows shapes of
distribution and
potential outliers;
ignores the individual
data values
7. slope-intercept form y = mx + b, where
m is slope of the line
and b is the y-
intercept.
8. Standard Deviation Rule: (68-95-99.7 Rule)
68% of the data is
within 1 standard
3/
41
, C955 Applied Probability and statistics Question and answers
100% correct 2025
deviation of the mean.
95% of the data is
within 2 standard
deviations of the
4/
41
