CIS exam review

Data-ink is the ink used in a table or chart that _______. Select one: a.does not help in conveying the data to the audience. b.helps in presenting data when the audience need not know exact values. c.is necessary to convey the meaning of the data to the audience. d.increases the non-data-ink ratio.

.increases the non-data-ink ratio.

Compute the relative frequencies for the data given in the table below: GradesNumber of students A 16 B 28 C 33 D 13 Total 90 Select one: 0.31, 0.14, 0.37, 0.18 0.37, 0.14, 0.31, 0.18 0.16, 0.28, 0.33, 0.13 0.18, 0.31, 0.37, 0.14

0.18, 0.31, 0.37, 0.14

Compute the mode for the following data. 12, 16, 19, 10, 12, 11, 21, 12, 21, 10 Select one: 21 11 12 10

12

Compute the mean of the following data. 56, 42, 37, 29, 45, 51, 30, 25, 34, 57 Select one: 42.8 52.1 40.6 39.4

40.6

What is the mode of the data set given below? 35, 47, 65, 47, 22 ​ Select one: 47.5 47 65 22

47

A sample of 13 adult males' heights are listed below. ​ 70, 72, 71, 70, 69, 73, 69, 68, 70, 71, 67, 71, 74What is the range of the sample? Select one: 7 6.5 5 4

7

_______________ acts as a representative of the population. Select one: The variable The variance A sample A random variable

A sample

A manager of a fast food restaurant wants the drive-thru employee to ask every fifth customer if he or she is satisfied with the service. Who makes up the sample? Select one: All customers who use the drive-thru window of this fast food restaurant All survey respondents All customers of this restaurant The proportion of customers who say they are satisfied with their service

All customers who use the drive-thru window of this fast food restaurant

Which of the following best exemplifies big data? Select one: Five hundred Facebook users upload one thousand pictures per day. Cellphone owners around the world generate vast amounts of data by calling, texting, tweeting, and browsing the Web on a daily basis. A local grocery store collects data from those that scan their loyalty card. A pharmacy keeps track of customer purchases to send its customers coupons.

Cellphone owners around the world generate vast amounts of data by calling, texting, tweeting, and browsing the Web on a daily basis.

__________ are visual methods of displaying data. Select one: a.Tables b.Charts c.PivotTables d.Crosstabs

Charts

__________ are analytical tools that describe what has happened. Select one: Descriptive Analytics Prescriptive Analytics Predictive Analytics Business Analytics

Descriptive Analytics

DJ needs to display data over time. Which of the following charts should he use? Select one: a.Scatter chart b.Pie chart c.Bar chart d.Line chart

Line chart

In the spectrum of business analytics, which is the most complex? Select one: Descriptive Predictive Prescriptive Operational

Prescriptive

Susan would like to create a graph to display the number of males and females in her class who got an A, B, C, D, and F on the last test. Which of the following graphs could she use? Select one: a.Stacked-column chart b.Scatter chart c.Pie chart d.Heat map

Stacked-column chart

__________ has to do with how much uncertainty is in the data. Select one: Veracity Volume Value Velocity

Veracity

What are the four V's of big data? Select one: Volume, Velocity, Variety, Veracity Velocity, Volume, Value, Veracity Volume, Variety, Velocity, Validity Value, Variety, Velocity, Validity

Volume, Velocity, Variety, Veracity

__________ analytics is the analysis of online activity, such as visits to websites or social media. Select one: Web Health Care Supply-Chain Sports

Web

A chart that is recommended as an alternative to a pie chart is a _________. Select one: a.bar chart. b.line chart. c.stacked column chart. d.box plot.

bar chart.

A graphical presentation that uses vertical bars to display the magnitude of quantitative data is known as a ________. Select one: a.scatter chart. b.bubble chart. c.clustered column chart. d.column chart.

d.column chart.

Bar charts use ________. Select one: a.horizontal bars to display the magnitude of the quantitative variable. b.vertical bars to display the magnitude of the quantitative variable. c.horizontal and vertical bars to display the magnitude of the quantitative variable. d.vertical bars to display the magnitude of the categorical variable.

d.vertical bars to display the magnitude of the categorical variable.

Business analytics is the scientific process of transforming data into insight for making better __________ . Select one: decisions profits revenue output

decisions

A two-dimensional graph representing the data using different shades of color to indicate magnitude is called a _______. Select one: a.heat map. b.bubble chart. c.column chart. d.pie chart.

heat map.

A __________ is a graphical summary of data previously summarized in a frequency distribution. Select one: box plot histogram line chart scatter chart

histogram

Deleting the grid lines in a table and the horizontal lines in a chart ________. Select one: a.increases the data-ink ratio. b.decreases the data-ink ratio. c.increases the non-data-ink ratio. d.does not affect the data-ink ratio.

increases the data-ink ratio.

The letter grades (A, B, C, D, F) of business analysis students are recorded by a professor. This variable's classification Select one: is quantitative data. cannot be determined. is categorical data. is time series data.

is categorical data.

A disadvantage of stacked-column charts and stacked-bar charts is that ________ Select one: a.they do not include all the values of the variable. b.they cannot be used to compare relative values of quantitative variables for the same category. c.it can be difficult to perceive small differences in areas. d.they are only used when many quantitative variables need to be displayed.

it can be difficult to perceive small differences in areas.

The data collected from the customers in restaurants about the quality of food is an example of a(n)... Select one: variable study. cross-sectional study. experimental study. observational study.

observational study.

Advanced analytics generally refers to Select one: descriptive and prescriptive analytics. simulation. predictive and prescriptive analytics. decision analysis.

predictive and prescriptive analytics.

The act of collecting data that are representative of the population data is called _________. Select one: random sampling sample data population sampling sources of data

random sampling

In many cases, white space in a chart can improve ________. Select one: a.complexity. b.readability. c.functionality. d.stability.

readability.

Data-driven decision making tends to decrease a firm's Select one: market value. productivity. risk. profit.

risk.

A _____________ is a graphical presentation of the relationship between two quantitative variables. Select one: a.histogram b.bar chart c.pie chart d.scatter chart

scatter chart

A data __________ is trained in both computer science and statistics and knows how to effectively process and analyze large amounts of data. Select one: scientist professional designer expert

scientist

A line chart that has no axes but is used to provide information on overall trends for time series data is called a ________. Select one: a.time series plot. b.sparkline. c.trendline. d.bubble chart.

sparkline.

Tables should be used instead of charts when _________. Select one: a.the reader needs relative comparisons of data. b.there are more than two columns of data. c.the values being displayed have different units or very different magnitudes. d.the reader need not differentiate the columns and rows.

the values being displayed have different units or very different magnitudes.

A quantity of interest that can take on different values is known as a(n) Select one: variable. parameter. sample. observation.

variable.