Business Analytics
3rd Edition
ISBN: 9780135231678
Author: Evans, James R. (james Robert)
Publisher: PEARSON EDUCATION (COLLEGE)
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Textbook Question
Chapter 3, Problem 1.1CYU
Explain the pros and cons of tabular versus visual data analysis.
Expert Solution & Answer
To determine
Describe the advantages and disadvantages of tabular versus visual data analysis.
Explanation of Solution
Tabular data analysis:
The tabular form of the data would help in identifying the exact or accurate values of required quantity. It helps in comparing the individual values of one group with another group.
The main disadvantage of using tabular form of data analysis is that, the table cannot exhibit the hidden trends or patterns in the data. It would not be an effective way of comparing each individual value in the data to determine the differences between two groups.
Visual data analysis:
The visualization of the data helps in providing a good communication with the data at all the levels of organizations. The graphs used for visualizing data would exhibit the underlying patterns in the datasets and helps to determine the relationships between the variables. This would help in making important decisions related to business. The data can be easily understood and interpreted through visualization techniques.
The main disadvantage of visual data analysis is that, an individual data value for a particular item or quantity cannot be identified using the graphs or pictures.
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Students have asked these similar questions
Question 4
Fourteen individuals were given a complex puzzle to complete. The times in seconds was recorded
for their first and second attempts and the results provided below:
1
2
3
first attempt
172
255
second attempt 70
4 5
114 248 218
194 270 267 66
6 7
230 219
341 174
8
10
9
210 261 347 218 200 281
199 308 268 243 236 300
11
12
13
14
140
302
a. Calculate a 95% confidence interval for the mean time taken by each individual to
complete the (i) first attempt and (ii) second attempt. [la]
b. Test the hypothesis that the difference between the two mean times for both is 100
seconds. Use the 5% level of significance.
c. Subsequently, it was learnt that the times for the second attempt were incorrecly
recorded and that each of the values is 50 seconds too large. What, if any, difference
does this make to the results of the test done in part (b)? Show all steps for the
hypothesis test
Question 3
3200 students were asked about the importance of study groups in successfully completing their
courses. They were asked to provide their current majors as well as their opinion. The results are given
below:
Major
Opinion Psychology Sociology Economics Statistics Accounting Total
Agree
144
183
201
271
251
1050
Disagree
230
233
254
227
218
1162
Impartial
201
181
196
234
176
988
Total
575
597
651
732
645
3200
a. State both the null and alternative hypotheses.
b. Provide the decision rule for making this decision. Use an alpha level of 5%.
c. Show all of the work necessary to calculate the appropriate statistic. |
d. What conclusion are you allowed to draw?
c. Would your conclusion change at the 10% level of significance?
f. Confirm test results in part (c) using JASP. Note: All JASP input files and output
tables should be provided
Question 1
A tech company has acknowledged the importance of having records of all meetings conducted.
The meetings are very fast paced and requires equipment that is able to capture the information in
the shortest possible time. There are two options, using a typewriter or a word processor. Fifteen
administrative assistants are selected and the amount of typing time in hours was recorded. The
results are given below:
1
2
3
4
5
6
7
8
9
10
11 12 13
14
15
typewriter
8.0 6.5
5.0 6.7
7.8
8.5
7.2
5.7
9.2
5.7 6.5
word processor 7.2 5.7
8.3
7.5
9.2
7.2
6.5
7.0
6.9
34
7.0 6.9
8.8
6.7
8.8 9.4 8.6 5.5 7.2
8.4
a. Test the hypothesis that the mean typing time in hours for typewriters is less than 7.0.
Use the 1% level of significance.
b. Construct a 90% confidence interval for the difference in mean typing time in hours,
where a difference is equal to the typing time in hours of word processors minus typing
time in hours of typewriter.
c. Using the 5% significance level, determine whether there is…
Chapter 3 Solutions
Business Analytics
Ch. 3 - Explain the pros and cons of tabular versus visual...Ch. 3 - How is data visualization used in descriptive,...Ch. 3 - Summarize the most useful charts available in...Ch. 3 - Prob. 2.2CYUCh. 3 - Prob. 2.3CYUCh. 3 - Prob. 2.4CYUCh. 3 - Prob. 3.1CYUCh. 3 - What is a heatmap, and what are some typical...Ch. 3 - Prob. 3.3CYUCh. 3 - Prob. 4.1CYU
Ch. 3 - Prob. 4.2CYUCh. 3 - Prob. 4.3CYUCh. 3 - Create clustered column and stacked column charts...Ch. 3 - Prob. 1.2PECh. 3 - Prob. 1.3PECh. 3 - Prob. 1.4PECh. 3 - Prob. 1.5PECh. 3 - Prob. 1.6PECh. 3 - Prob. 1.7PECh. 3 - Prob. 1.8PECh. 3 - Construct a column chart for the data in the Excel...Ch. 3 - The Excel file Internet Usage provides data about...Ch. 3 - Construct an appropriate chart to show the...Ch. 3 - Construct an appropriate chart or charts to...Ch. 3 - Prob. 1.13PECh. 3 - In the Excel file Banking Data, apply the...Ch. 3 - Prob. 1.15PECh. 3 - Prob. 1.16PECh. 3 - Prob. 1.17PECh. 3 - Prob. 1.18PECh. 3 - Create a useful dashboard for the data in the...Ch. 3 - Prob. 1.20PECh. 3 - Prob. 1.21PECh. 3 - Prob. 2.1PECh. 3 - Prob. 2.2PECh. 3 - Prob. 2.3PECh. 3 - Prob. 2.4PECh. 3 - Use PivotCharts to create a useful dashboard for...Ch. 3 - Prob. 2.6PECh. 3 - Prob. 2.7PECh. 3 - Prob. 2.8PECh. 3 - Use PivotCharts to create a useful dashboard for...
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