BUAL 2600 CORE MAIN EXAMS ALL QUESTIONS
AND ANSWERS SURE A+
✔✔3 probability sampling methods - ✔✔stratified random, multistage cluster, systematic
✔✔(Probability sampling method) Divide population into non-overlapping groups (strata)
then select a random sample from each stratum. - ✔✔Stratified random sampling
✔✔(Probability sampling method) Divide population into clusters and then randomly
select clusters to sample - ✔✔Multistage cluster sampling
✔✔(Probability sampling method) List population, select random starting point, sample
each nth element (Randomly select a starting point and take every nth piece of data
from a listing of the population) - ✔✔systematic sampling
✔✔Methods for obtaining a sample - ✔✔sampling designs
✔✔The sample we take - ✔✔sample survey
✔✔(question type) Clearly stated and easy to answer; easy to analyze; limited
information - ✔✔dichotomous
, ✔✔(question type) Allow more than two responses; usually analyzed with averages -
✔✔multiple choice
✔✔(question type) Most honest and complete information; cannot be readily
summarized - ✔✔Open ended
✔✔With categorical/qualitative data, names identify the different categories. This data
can be summarized using a ________________ - ✔✔frequency distribution
✔✔A table that summarizes the number of items in each of several non-overlapping
classes (a list of data classes with the count of values that belong to each class) -
✔✔frequency distribution
✔✔_______________ frequency summarizes the proportion of items in each class -
✔✔relative
✔✔Vertical or horizontal rectangle represents the frequency for each category (height
can be frequency, relative frequency, or percent frequency) - ✔✔Bar chart
✔✔a picture of the frequency distribution - ✔✔histogram
✔✔In a histogram, the rectangles represent the __________. The base represents the
___________. The hight represents the _____________. - ✔✔classes; class length;
frequency
✔✔Which way is this histogram skewed? - ✔✔right
✔✔graph of a cumulative distribution (type of line chart) - ✔✔ogive graph
✔✔What is the easiest way to summarize data? - ✔✔dot plots
✔✔Display in which the purpose is to see the overall pattern of the data, by grouping
data into classes; best for small to moderately sized data distributions - ✔✔stem and
leaf display
✔✔In a contingency table, the rows classify according to ______________ and the
columns classify according to a __________________ - ✔✔one dimension; second
dimension
✔✔Provides a graphical presentation of the current status and historical trends of key
performance indicators - ✔✔dashboard
✔✔Charts that present data similar to a speedometer - ✔✔gauges
AND ANSWERS SURE A+
✔✔3 probability sampling methods - ✔✔stratified random, multistage cluster, systematic
✔✔(Probability sampling method) Divide population into non-overlapping groups (strata)
then select a random sample from each stratum. - ✔✔Stratified random sampling
✔✔(Probability sampling method) Divide population into clusters and then randomly
select clusters to sample - ✔✔Multistage cluster sampling
✔✔(Probability sampling method) List population, select random starting point, sample
each nth element (Randomly select a starting point and take every nth piece of data
from a listing of the population) - ✔✔systematic sampling
✔✔Methods for obtaining a sample - ✔✔sampling designs
✔✔The sample we take - ✔✔sample survey
✔✔(question type) Clearly stated and easy to answer; easy to analyze; limited
information - ✔✔dichotomous
, ✔✔(question type) Allow more than two responses; usually analyzed with averages -
✔✔multiple choice
✔✔(question type) Most honest and complete information; cannot be readily
summarized - ✔✔Open ended
✔✔With categorical/qualitative data, names identify the different categories. This data
can be summarized using a ________________ - ✔✔frequency distribution
✔✔A table that summarizes the number of items in each of several non-overlapping
classes (a list of data classes with the count of values that belong to each class) -
✔✔frequency distribution
✔✔_______________ frequency summarizes the proportion of items in each class -
✔✔relative
✔✔Vertical or horizontal rectangle represents the frequency for each category (height
can be frequency, relative frequency, or percent frequency) - ✔✔Bar chart
✔✔a picture of the frequency distribution - ✔✔histogram
✔✔In a histogram, the rectangles represent the __________. The base represents the
___________. The hight represents the _____________. - ✔✔classes; class length;
frequency
✔✔Which way is this histogram skewed? - ✔✔right
✔✔graph of a cumulative distribution (type of line chart) - ✔✔ogive graph
✔✔What is the easiest way to summarize data? - ✔✔dot plots
✔✔Display in which the purpose is to see the overall pattern of the data, by grouping
data into classes; best for small to moderately sized data distributions - ✔✔stem and
leaf display
✔✔In a contingency table, the rows classify according to ______________ and the
columns classify according to a __________________ - ✔✔one dimension; second
dimension
✔✔Provides a graphical presentation of the current status and historical trends of key
performance indicators - ✔✔dashboard
✔✔Charts that present data similar to a speedometer - ✔✔gauges
