Data Science Fundamentals Worksheet

Data Science Fundamentals Worksheet

University

91 Qs

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Data Science Fundamentals Worksheet

Data Science Fundamentals Worksheet

Assessment

Quiz

Computers

University

Practice Problem

Medium

Created by

xiaozhen lu

Used 2+ times

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91 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary goal of data science?

To collect as much data as possible

To use data to gain insights and make decisions

To replace human judgment entirely

To create complex algorithms without application

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of unstructured data?

A CSV file of customer purchases

A SQL database table

A tweet containing text and emojis

An Excel spreadsheet with sales figures

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the "Venn Diagram of Data Science" include?

Hacking skills, math/statistics, and domain expertise

Coding, visualization, and cloud computing

Data mining, AI, and robotics

SQL, Python, and R

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of data is "zip code" classified as?

Quantitative continuous

Quantitative discrete

Qualitative nominal

Qualitative ordinal

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the key assumption of the Central Limit Theorem?

Data must be normally distributed

Sample means will approximate normality as sample size increases

Population variance must be known

Samples must be biased

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In hypothesis testing, what does a p-value < 0.05 typically indicate?

Accept the null hypothesis

Reject the null hypothesis

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which metric measures "how often a classifier is correct when it predicts positive"?

Recall

F1-score

Precision

Accuracy

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