Tableau - CSE Things

Master Data Viz with Tableau: Your Ultimate Guide

CSE-THINGS — Wed, 19 Apr 2023 16:42:56 +0000

Tableau is a data visualization software that enables users to analyze, visualize, and share complex data insights in a simple and easy-to-understand format.

It provides a drag-and-drop interface that allows users to create interactive dashboards, reports, and charts to represent data from various sources, including Excel spreadsheets, databases, and cloud-based platforms like Salesforce and Google Analytics.

One of the key features of Tableau is its ability to connect to multiple data sources and transform raw data into meaningful insights.

Once connected to the data, users can choose from a wide range of chart types, such as bar charts, line charts, scatter plots, and heat maps, to create visualizations that best represent the data.

Advanced charts like treemaps, packed bubbles, and bullet charts can also be created to convey complex information effectively.

Tableau’s data filtering feature enables users to filter data by date, region, or product category, among other options, helping them focus on specific aspects of the data.

Additionally, Tableau’s calculations and parameters allow users to perform more advanced analysis of their data, providing a deeper understanding of the insights.

Interactive dashboards are a major advantage of using Tableau.

Dashboards consist of multiple visualizations that allow users to explore the data and gain real-time insights by interacting with the visualizations.

For example, by clicking on data points or filters, users can update the other visualizations in the dashboard accordingly.

This feature enables users to ask and answer questions on the fly and uncover insights that may have gone unnoticed in a static report.

Tableau offers a wide range of sharing options, allowing users to share their visualizations and dashboards with others easily.

Users can publish their visualizations to Tableau Server, which provides secure access to other users. Alternatively, users can embed their visualizations into web pages, blogs, or other applications using Tableau’s JavaScript API.

In conclusion, Tableau is an essential tool for data analysts and business intelligence professionals who want to explore, analyze, and visualize data from various sources.

With its powerful features, intuitive user interface, and interactive dashboards, Tableau is an excellent solution for anyone looking to gain insights from their data.

Also, check the Tableau mcq question

The post Master Data Viz with Tableau: Your Ultimate Guide appeared first on CSE Things.

Tableau MCQ’s

CSE-THINGS — Tue, 13 Jul 2021 05:32:00 +0000

Question 1 :

Which of the accompanying isn’t a Pattern Line display?

Options :

a. Straight Pattern Line

b. Exponential Pattern Line

c. Binomial Pattern Line

d. Logarithmic Pattern Line

Answers : 

c.  Binomial Pattern Line

Question 2 :

Is it conceivable to convey a URL activity on a dashboard question open a Site page inside a dashboard as opposed to opening the framework’s internet browser?

Options :

a. Valid, with the utilization of Scene Server

b. Valid, with the utilization of a Site page protest

c. False, unrealistic

d. Genuine, requires a module

Answers : 

b. Valid, with the utilization of a Site page protest

Question 3 :

For making variable size canisters we utilize _____________.

Options :

a. Sets

b. Gatherings

c. Computed fields

d. Table Estimations

Answers : 

c.  Computed fields

Question 4 :

A justifiable reason motivation to utilize a projectile chart.

Options :

a. Examining the pattern for an era

b. Looking at the genuine against the objective deals

c. Adding information to canisters and ascertaining tally measure

d. Showing the business development for a specific year

Answers : 

b. Looking at the genuine against the objective deals

Question 5 :

How do you identify a continuous field in Tableau?

Options :

a. It is identified by a blue pill in the visualization

b. It is identified by a green pill in a visualization

c. It is preceded by a # symbol in the data window

d. When added to the visualization, it produces distinct values

Answers : 

b. It is identified by a green pill in a visualization

Question 6 :

The image below uses which map visualization?

Options :

a. Filled maps

b. Layered maps

c. WMS server maps

d. Symbol maps

Answers : 

c. WMS server maps

Question 7 :

What are the file extensions in Tableau.

Options :

a. Tableau Workbook (.twb)

b. Tableau Packaged Workbook (.twbx)

c. Tableau Data Source(.tds)

d. All of the above

Answers : 

d. All of the above

Question 8 :

For creating variable size bins we use _____________

Options :

a. Sets

b. Groups

c. Calculated fields

d. Table Calculations

Answers : 

c. Calculated fields

Question 9 :

Is it possible to use measures in the same view multiple times (e.g. SUM of the measure and AVG of the measure)?

Options :

a. No

b. Yes

c. May be

Answers : 

b. Yes

Question 10 :

A good reason to use a bullet graph.

Options :

a. Analysing the trend for a time period

b. Comparing the actual against the target sales

c. Adding data to bins and calculating count measure

d. Displaying the sales growth for a particular year

Answers : 

b. Comparing the actual against the target sales

The post Tableau MCQ’s appeared first on CSE Things.

Latest Linux/Unix Practice questions

CSE-THINGS — Sun, 11 Jul 2021 10:47:51 +0000

Question 1 :

We have a scenario. We receives a source file having header and footer. In between them we receive incremental data of varying number of rows.

Please write a script to remove header and footer from the file.

Hint – using head, tail and wc commands (there are other ways like using sed and awk too)

Answers : 

read -p "Enter file name: " fname
sed -i '1d;$d' $fname

Question 2 :

Please write a code to read any file line by line.

Answers :

 #!/bin/bash

input="/root/shell_scripts/abc"

while IFS= read -r line

do

  echo "$line"

done < "$input"

Question 3 :

Let’s say we have a file is a comma delimited file and it has multiple columns of data. Please write a code to print the 2nd and 5th columns from this comma (,) delimited file

Answers :

awk -F',' '{print $2, $5}' emplist.txt

Question 4 :

What is the diff between cp and mv commands.

Answers :

cp command is used to copy the file and mv command is used to move so the only difference is while using cp command old file is not affected but while using mv command old file is is deleted from its path and will be available at new path.

Question 5 :

Write a command to replace a word ‘abc’ from a file with word ‘xyz’.

Answers :

open vi editor

 :%s/abc/xyz/g

Question 6 :

What is the meaning of “-ltr” in “ls” command.

Answers :

ltr = -ltr command will list all files according to the order of time in which they were created. and also list command display the file name, file permission, owner name, group name, date and time, creation links etc. “ltr” stands for l = long listing, t = time, r = recursive.

ls = command shows a list of all the files and directories present in the current working directory of your machine.

Question 7 :

Write a code (or a set of commands) to read the two inputs from the user and calculate the summation of both the values.

Answers :

#!/bin/bash

read -p "Enter first number: " num1

read -p "Enter second number: " num2

sum=$(( $num1 + $num2 ))

echo "Sum is: $sum"

Question 8 :

Write the syntax to check execution status of the previous command.

Answers :

echo $?

Question 9 :

Write the syntax to get the number of arguments passed to a Script.

Answers :

echo $#

Question 10 :

Write the syntax with examples of if-else, for loop, while loop in Unix shell scripting.

Answers :

echo WHILE LOOP

a=0

while [ $a -lt 10 ]

do

echo $a

a=`expr $a + 1`

done

#if else

echo IF ELSE LOOP

a=123

b=890

echo a is $a

echo b is $b

if [ $a == $b ]

then

echo "a is equal to b"

else

echo "a is not equal to b"

fi

#for loop

echo FOR LOOP

for (( i=0; i<10 ; i++ ))

do

echo $i

done

Question 11 :

What is the diff between “>” and “>>”?

Answers :

The > sign is used to create a file and add data to it and also for redirecting the output of a program to something other than stdout.

The >> appends to a file or creates the file if it doesn’t exist.

The > overwrites the file if it exists or creates it if it doesn’t exist.

Question 12 :

Explain with example Each field in crontab

Answers :

MIN HOUR DOM MON DOW CMD

Minute – A minute value can be between 0-59

Hour – A hour value can be between 0-23

Day_of_the_month – This value can between 1-31. For the months having less days will ignore remaining part

Month_of_the_year – This can be between 1-12. You can also define this value with first three alphebts of month like jan, feb, mar, apr etc.

Day_of_the_Week – This can be the value between 0-7. Where 0 and 7 for Sunday, 1 for Monday, 2 for Tuestday etc. You can also use first three alphabets of days like, sun, mon, tue, wed, etc.

Command to view crontab entries of current user —-> crontab -l

Command to view crontab entries of a specific user ——> crontab -u username -l

Question 12 :

Explain with example Each field in crontab

Answers :

MIN HOUR DOM MON DOW CMD

Minute – A minute value can be between 0-59

Hour – A hour value can be between 0-23

Day_of_the_month – This value can between 1-31. For the months having less days will ignore remaining part

Month_of_the_year – This can be between 1-12. You can also define this value with first three alphebts of month like jan, feb, mar, apr etc.

Day_of_the_Week – This can be the value between 0-7. Where 0 and 7 for Sunday, 1 for Monday, 2 for Tuestday etc. You can also use first three alphabets of days like, sun, mon, tue, wed, etc.

Command to view crontab entries of current user —-> crontab -l

Command to view crontab entries of a specific user ——> crontab -u username -l

Question 13 :

In shell script when to we should use a single and double quotes?

Answers :

Single Quotes Can be used to stop interpreting the special characters and display them.

and Double Quotes are used to interpret the special Characters.

Question 14 :

Write the command to change the owner and permissions of the file/ directory?

Answers :

chown jagruti abc

chmod +777 abc

Question 15 :

Write a script to which should first accept a String from user as a input and then Reverse it

Answers :

  #!/bin/bash

echo "enter the string "

read str

len=`echo ${#str}`

while [ $len -ne 0 ]

do

y=$y`echo $str | cut -c $len`

((len--))

done

echo $y

Question 16 :

Write a script to accept 2 Strings from user as a input and then concatenate it.

Answers :

 echo "Enter String 1"

read str1

echo "Enter String 2"

read str2

str1+=$str2

echo $str1

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