# Discussion on data code

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Descriptive Statistics, Frequencies, and Hypothesis Testing

• Calculating standard score (z-score)

Project 2 was worth 60 points. The class had an average of 51.24 and a variance of 14.25. Look up your own raw score and calculate your z-score. Provide the following pieces of information:

• Calculating Descriptive Statistics and Frequencies

From the Perdue dataset, pick any two of the following variables that were not part of the lecture materials and report the following statistics for each variable:

Variable Options: Brand_Good, Brand_Like, Entertaining, Irritated, Excited, Favorable

Statistics: Mean, standard deviation, mode, frequency analysis table, histogram chart

What do the statistics tell us about each variable? Briefly discuss.

• Calculating Chi Square

When asked the brand name of the chicken in the ad they just watched, 16 participants reported “Fresh and Tasty” brand, 171 reported “Perdue”, and 1 particpant reported “Tyson.”

Based on knowledge of the population and previous research, the researchers expected that 90% of participants would guess Perdue with 5% of participants guessing “Fresh and Tasty” and 5% guessing “Tyson.”

Is the sample significantly different than the population? Test this question using chi square analysis. Report the chi square statistic and its p-value.

IS 335 – Fall 2020 – Kishore
Tableau Assignment #1 (Chapters 1 and 2) Notes:
assignment to complete this assignment. We will be referring to this file as the Superstore data set
for the purposes of the assignment. Take a moment to familiarize yourself with the nature of the
data.
2. This assignment is worth 50 points. All questions have equal weight.
3. Please submit your completed assignment as a single .twbx file. The name of your file should
be “<Your last name><Your first name>-Tableau-Assignment-1.twbx”. Q1 The managers at Superstore are interested in monitoring the total profits that they made in the
various categories of products they have sold so far broken down by the customer segments in
which they sold their products in ascending order. The viz shown below provides this info to the
managers. Recreate this viz in a sheet named Q1 in your Tableau workbook that you will submit as
your Assignment #1 Answer Workbook. Hint: Because we want profit information for all orders that have been fulfilled, you will need to
create a data source consisting of only the orders worksheet in the Excel workbook, and use that
data source for this viz. Q2 Now the managers want to see the same profit information as in Q1 above, but only for orders that were returned. Recreate the viz shown below in a sheet named Q2 in your Tableau
workbook that you will submit as your Assignment #1 Answer Workbook. Hint: You will need to create a new data source that consists of both the orders and the returns
worksheets inner joined by order id. Also, remember that the data source consisting of orders only
needs to be retained, otherwise your information in response to Q1 will be incorrect. Q3 The managers of Superstore are also interested in monitoring the trends of quarterly shipping costs for regular air and express air ship modes that were incurred by the various regions in
which Superstore operates for the orders that were returned. The viz shown below provides
this info to the managers. Recreate this viz in a sheet named Q3 in your Tableau workbook that
you will submit as your Assignment #1 Answer Workbook. Hint: Use the data source that you created for Q2 that consists of both the orders and the returns
worksheets inner joined by order id. Again, remember that the data source consisting of orders
only needs to be retained, otherwise your information in response to Q1 will be incorrect.

! ” # \$%” & \$\$’%” ()*#+& , – % -” Q4 The managers at Superstore are also interested in understanding the relationship between the total profits they made and the total discounts they gave in various cities across the United States for all the orders that they fulfilled. The viz shown below provides this info to the
managers. Recreate this viz in a sheet named Q4 in your Tableau workbook that you will submit as
your Assignment #1 Answer Workbook. Hint: Because we want to see information about profits and discounts for all the orders that have
been fulfilled, you will need to use the data source you used for Q1 consisting of only the orders
worksheet in the Excel workbook. Q5 The analysis conducted by managers at Superstore from Q4 raised the question of the correlation
between shipping cost and quantity ordered on a state-by-state basis in the United States. To
provide this insight to managers, recreate the viz shown below as a sheet named Q5. Ensure that
the number featured in every state is the order quantity, and the color indicates shipping cost. Hint: Use the initial data source featured in Q1, which was the Orders data sheet (prior to the
inner-join). Begin by creating a filled map in a similar manner as that from Q4, which the
exception of replacing profit and discount with shipping cost and order quantity respectively, and
ensuring that the “map” mark is selected. Q6 Now that we have developed the various vizs that managers at Superstore want to see to gain
insights into Superstore’s business activities, we must now tie all this information together in a
single, comprehensive dashboard. The viz shown below shows such a dashboard for the
Superstore managers. Recreate this viz in a dashboard named Q6 in your Tableau workbook that
you will submit as your Assignment #1 Answer Workbook. Hint: You should use the Tiled toggle button to tile you four viz sheets in the dashboard. Also
remember to reposition the legends just beneath each of their respective viz, and adjust as
needed. Disregard if the legends do not exactly replicate the image below, but ensure that

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