Business Analytics & Intelligence - Set 4
1] Which are cons of data visualization?
A. It conveys a lot of information in a small space.
B. It makes your report more visually appealing.
C. visual data is distorted or excessively used.
D. None Of the above
ANSWER : C
2] Which of the intricate techniques is not used for data visualization?
A. Bullet Graphs
B. Bubble Clouds
C. Fever Maps
D. Heat Maps
ANSWER : C
3] Which one of the following is most basic and commonly used techniques?
A. Line charts
B. Scatter plots
C. Population pyramids
D. Area charts
ANSWER : A
4] Which is used to query and edit graphical settings?
A. anova()
B. par()
C. plot()
D. cum()
ANSWER : B
5] Which of the following method make vector of repeated values?
A. rep()
B. data()
C. view()
D. read()
ANSWER : B
6] Who calls the lower level functions lm.fit?
A. lm()
B. col.max
C. par
D. histo
ANSWER : A
7] Which of the following lists names of variables in a data.frame?
A. par()
B. names()
C. barchart()
D. quantile()
ANSWER : D
8] Which of the following statement is true?
A. Scientific visualization, sometimes referred to in shorthand as SciVis
B. Healthcare professionals frequently use choropleth maps to visualize important health data.
C. Candlestick charts are used as trading tools and help finance professionals analyze price movements over time
D. All of the above
ANSWER : D
9] ______ is used for density plots?
A. par
B. lm
C. kde
D. C
ANSWER : C
10] Which of the following method make vector of repeated values?
a) rep()
b) data()
c) view()
d) read()
ANSWER : B
11] Which of the following finds the position of a quantile in a dataset?
a) quantile()
b) barplot()
c) barchart()
d) rep()
ANSWER : A
12] Which of the following function cross-tabulate tables using formulas?
a) table
b) stem
c) xtabs
d) read
ANSWER : D
13] Which of the following groups find the correlation matrix?
a) factor.model
b) col.max(x)
c) stem
d) which.max(x)
ANSWER : A
14] which of the following statement make a mosaic plot?
a) histogram()
b) mosaicplot()
c) bar()
d) which.max(x)
ANSWER : B
15] Which of the following compute proportions from a contingency table?
a) par()
b) prop.table()
c) anova()
d) mosaicplot()
ANSWER : B
16] Which of the following is lattice command for producing a scatterplot?
a) plot()
b) lm()
c) xyplot()
d) anova()
ANSWER : C
17] Which of the following builds empirical cumulative distribution function?
a) ecdf()
b) cum
c) cumsum
d) lm()
ANSWER : A
18] Which of the following is used to view dataset in a spreadsheet-type format ?
a) Disp()
b) View()
c) Seq()
d) lm()
ANSWER : B
19] _______ function carries out a chi-square test.
a) chisq.test()
b) t.test()
c) prop.test()
d) fisher.test()
ANSWER : A
20] Which of the following adds marginal sums to an existing table?
a) par()
b) prop.table()
c) addmargins()
d) quantile()
ANSWER : B
