A+ Graded Paper
QBA Exam 1 | Verified Questions & A+ Answers
Questions and Mark scheme
Version: Final
, class midpoint - ✔✔the value halfway between the lower and upper class limits
dot plot - ✔✔graphical device that summarizes data by the number of dots above each data value on the horizontal axis
histogram - ✔✔a graphical display of a frequency distribution, relative frequency distribution, or percent frequency
distribution of quantitative data constructed by placing the class intervals on the horizontal axis and the frequencies,
relative frequencies, or percent frequencies on the vertical axis.
cumulative frequency distribution - ✔✔a tabular summary of quantitative data showing the number of data values that
are less than or equal to the upper class limit of each class
cumulative relative frequency distribution - ✔✔a tabular summary of quantitative data showing the fraction or
proportion of data values that are less than or equal to the upper class limit of each class.
cumulative percent frequency distribution - ✔✔a tabular summary of quantitative data showing the percentage of data
values that are less than or equal to the upper class limit of each class.
Stem and leaf display - ✔✔graphical display used to show simultaneously the rank order and shape of a distribution of
data
crosstabulation - ✔✔tabular summary of data for two variables. The classes for one variable are represented by the
rows; the classes for the other variable are represented by the columns.
Simpson's paradox - ✔✔Conclusions drawn from two or more separate crosstabulations that can be reversed when the
data are aggregated into a single crosstabulation.
scatter diagram - ✔✔a graphical display of the relationship between two quantitative variables. One variable is shown
on the horizontal axis and the other variable is shown on the vertical axis.
trendline - ✔✔A line that provides an approximation of the relationship between two variables.
side-by-side bar chart - ✔✔a graphical display for depicting multiple bar charts on the same display.
QBA Exam 1 | Verified Questions & A+ Answers
Questions and Mark scheme
Version: Final
, class midpoint - ✔✔the value halfway between the lower and upper class limits
dot plot - ✔✔graphical device that summarizes data by the number of dots above each data value on the horizontal axis
histogram - ✔✔a graphical display of a frequency distribution, relative frequency distribution, or percent frequency
distribution of quantitative data constructed by placing the class intervals on the horizontal axis and the frequencies,
relative frequencies, or percent frequencies on the vertical axis.
cumulative frequency distribution - ✔✔a tabular summary of quantitative data showing the number of data values that
are less than or equal to the upper class limit of each class
cumulative relative frequency distribution - ✔✔a tabular summary of quantitative data showing the fraction or
proportion of data values that are less than or equal to the upper class limit of each class.
cumulative percent frequency distribution - ✔✔a tabular summary of quantitative data showing the percentage of data
values that are less than or equal to the upper class limit of each class.
Stem and leaf display - ✔✔graphical display used to show simultaneously the rank order and shape of a distribution of
data
crosstabulation - ✔✔tabular summary of data for two variables. The classes for one variable are represented by the
rows; the classes for the other variable are represented by the columns.
Simpson's paradox - ✔✔Conclusions drawn from two or more separate crosstabulations that can be reversed when the
data are aggregated into a single crosstabulation.
scatter diagram - ✔✔a graphical display of the relationship between two quantitative variables. One variable is shown
on the horizontal axis and the other variable is shown on the vertical axis.
trendline - ✔✔A line that provides an approximation of the relationship between two variables.
side-by-side bar chart - ✔✔a graphical display for depicting multiple bar charts on the same display.
