ALL QMB 3200 MIDTERM VOCABULARY TESTS WITH SOLUTIONS

ALL QMB 3200 MIDTERM VOCABULARY
b b b b




TESTS WITH SOLUTIONS b b b




Analytics - correct answer-the scientific process of transforming data into insight
b B b B bB b B b B B
b B
b B
b B
b B
b b B


for making better decisions
B
b b B B
b B
b




Descriptive Analytics - correct answer-analytical techniques that describe what
b B B
b B bB
b B
b b B B
b B
b B
b




has happened in the past
B
b B
b B
b b B b B




Predictive Analytics - correct answer-analytical techniques that use models
b B b B B bB
b B
b B
b B
b B
b B
b




constructed from past data to predict the future or assess the impact of one
B
b b B B
b b B B
b b B B
b B
b B
b b B B
b B
b B
b B
b




variable or another
B
b B
b B
b




Prescriptive Analytics - correct answer-analytical techniques that yield course of
B
b B
b B bB
b b B B
b B
b B
b B
b B
b




action
B
b




Big Data - correct answer-a set of data that cannot be managed processed or
bB B
b B bB
b B
b B
b B
b b B b B B
b B
b B
b B
b B
b




analyzed with commonly available software in a reasonable amount of time.
B
b B
b B
b B
b B
b B
b B
b b B B
b B
b B
b




characterized by four V's: Volume, Veracity, Velocity, Variety
B
b B
b B
b B
b B
b b B B
b B
b




data mining - correct answer-the process of using procedures from statistics and
b B b B B bB
b B
b B
b B
b B
b B
b B
b b B B
b




B
bcomputer science B
b




frequency distribution - correct answer-a tabular summary of data showing the
b B b B B bB
b b B B
b B
b b B B
b B
b B
b




B
bnumber of observations in each of several nonoverlapping categories
B
b bB b B B
b b B B
b B
b b B

, relative frequency distribution - correct answer-A tabular summary of data
B
b B
b b B b B bB B
b B
b b B B
b B
b




B
bshowing the fraction or proportion of observations in each of several
b B B
b B
b b B B
b B
b B
b b B B
b b B


B
bnonoverlapping categories or classes. b B B
b B
b




percent frequency distribution - correct answer-A tabular summary of data
B
b B
b b B B bB
b B
b B
b B
b B
b B
b




B
bshowing the percentage of observations in each of several nonoverlapping
b B B
b B
b B
b b B B
b B
b B
b b B


B
bclasses

bar chart - correct answer-A graphical device for depicting categorical data that
B
b B
b B bB
b b B B
b B
b B
b b B b B B
b B
b




B
bhave been summarized in a frequency, relative frequency, or percent frequency
B
b b B b B b B b B B
b b B B
b B
b B
b




B
bdistribution.

pie chart - correct answer-A graphical device for presenting data summaries
B
b B
b B bB
b b B b B B
b B
b b B B
b b B


B
bbased on subdivision of a circle into sectors that correspond to the relative
B
b B
b b B b B B
b B
b b B b B b B b B b B b B


B
bfrequency for each class. b B B
b B
b




class midpoint - correct answer-The value halfway between the lower- and upper-
b B b B B bB
b b B B
b B
b B
b b B b B B
b B
b




class limits. b B




dot plot - correct answer-A graphical device that summarizes data by the number
b B b B b B bB B
b B
b B
b B
b B
b b B b B b B B
b




B
bof dots above each data value on the horizontal axis.
B
b b B B
b B
b B
b b B b B b B B
b




histogram - correct answer-A graphical display of a frequency distribution, relative
b B b B bB B
b b B B
b B
b b B B
b B
b B
b




B
bfrequency distribution, or percent frequency distribution of quantitative data b B B
b B
b B
b B
b B
b b B b B


B
bconstructed by placing the class intervals on the horizontal axis and the b B B
b B
b b B B
b B
b B
b b B b B B
b B
b




B
bfrequencies, relative frequencies, or percent frequencies on the vertical axis. b B b B b B B
b B
b b B B
b B
b B
b




cumulative frequency distribution - correct answer-A tabular summary of b B B
b B
b b B bB b B B
b b B B
b




B
bquantitative data showing the number of data values that are less than or equal to B
b B
b B
b B
b B
b b B b B B
b b B b B B
b b B B
b B
b




B
bthe upper-class limit of each class.
B
b B
b B
b B
b b B




cumulative relative frequency distribution - correct answer-A tabular summary of b B B
b b B B
b b B bB b B B
b B
b B
b




B
bquantitative data showing the fraction or proportion of data values that are less B
b B
b B
b B
b b B B
b b B B
b b B b B b B B
b




B
bthan or equal to the upper-class limit of each class.
B
b B
b b B B
b B
b b B b B B
b B
b




cumulative percent frequency distribution - correct answer-A tabular summary of b B B
b B
b b B B bB
b B
b B
b B
b B
b




B
bquantitative data showing the percentage of data values that are less than or B
b B
b B
b B
b b B b B b B b B B
b B
b b B b B


B
bequal to the upper-class limit of each class.
B
b b B b B b B B
b b B B
b




Stem and leaf display - correct answer-A graphical display used to show
b B B
b B
b B
b b B bB B
b b B B
b B
b B
b B
b




simultaneously the rank order and shape of a distribution of data.
B
b b B b B B
b B
b B
b B
b B
b B
b b B b B




crosstabulation - correct answer-A tabular summary of data for two variables. The B
b B bB
b B
b b B b B B
b B
b b B B
b B
b B
b




B
bclasses for one variable are represented by the rows; the classes for the other
B
b B
b b B b B B
b B
b B
b B
b b B B
b b B b B B
b




B
bvariable are represented by the columns. B
b B
b B
b B
b B
b




Simpson's Paradox - correct answer-Conclusions drawn from two or more b B B
b b B bB b B B
b B
b B
b B
b B
b




separate crosstabulations that can be reversed when the data are aggregated into
B
b bB b B B
b b B B
b B
b B
b B
b B
b b B B
b




a single crosstabulation.
B
b B
b b B