100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
304 Data Analysis Questions and Answers Already Graded A $10.99
Add to cart

Exam (elaborations)

304 Data Analysis Questions and Answers Already Graded A

 0 purchase
  • Course
  • 304 Data Analysis
  • Institution
  • 304 Data Analysis

304 Data Analysis Questions and Answers Already Graded A What is a common tool used by data analysts for performing calculations and creating visualizations? a) SPSS b) SQL c) Excel d) Tableau Which of the following refers to removing inconsistencies and errors in a dataset? a) Data ...

[Show more]

Preview 4 out of 38  pages

  • January 19, 2025
  • 38
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • 304 Data Analysis
  • 304 Data Analysis
avatar-seller
BrilliantScores
304 Data Analysis Questions and
Answers Already Graded A
What is a common tool used by data analysts for performing calculations and creating

visualizations?

a) SPSS

b) SQL


✔✔ c) Excel


d) Tableau




Which of the following refers to removing inconsistencies and errors in a dataset?


✔✔ a) Data cleaning


b) Data transformation

c) Data mining

d) Data aggregation




What is the purpose of a scatter plot?

a) To display the distribution of a dataset

b) To show the relationship between two continuous variables


1

,✔✔ c) To visualize correlations between two variables


d) To compare categorical data




What is a key characteristic of structured data?

a) It has no clear format


✔✔ b) It is organized in rows and columns


c) It is unorganized

d) It contains images and text




What does "data wrangling" refer to?


✔✔ a) Cleaning and preparing data for analysis


b) Visualizing data

c) Aggregating data

d) Collecting raw data




What is the difference between descriptive statistics and inferential statistics?

a) Descriptive statistics are used to predict future trends




2

,✔✔ b) Descriptive statistics summarize data, while inferential statistics make predictions or test

hypotheses

c) Descriptive statistics focus on visualizing data

d) There is no difference




What is the role of a histogram in data analysis?

a) To calculate the mean of the dataset


✔✔ b) To display the frequency distribution of a dataset


c) To compare two datasets

d) To plot a relationship between variables




Which of the following is a method of data aggregation?

a) Merging


✔✔ b) Summing


c) Filtering

d) Clustering




What is the main purpose of exploratory data analysis (EDA)?


3

, a) To prepare the data for machine learning algorithms


✔✔ b) To explore and summarize the main characteristics of the dataset


c) To apply statistical tests

d) To create predictions




What does a box plot display?

a) The distribution of data in a continuous form

b) The relationship between two variables


✔✔ c) The summary statistics of a dataset, including quartiles and outliers


d) The count of categorical data




What is the purpose of normalization in data analysis?


✔✔ a) To scale data to a specific range


b) To remove duplicate records

c) To visualize data patterns

d) To aggregate data




Which tool is typically used for analyzing large datasets in data science?


4

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller BrilliantScores. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $10.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

69066 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling
$10.99
  • (0)
Add to cart
Added