Prepare Data for Exploration Week 1 Weekly challenge 1

 google data analytics quiz 

#google #data #science #coursera #quiz #challenge

1.

Question 1

If you have a short time frame for data collection and need an answer immediately, you likely will have to use historical data.

1 / 1 point

True

False

Correct

If you have a short time frame for data collection and need an answer immediately, you likely will have to use historical data.

2.

Question 2

Which of the following is an example of continuous data?

1 / 1 point

Box office returns

Movie budget

Leading actors in movie

Movie run time

Correct

Movie run time is an example of continuous data.

3.

Question 3

Which of the following questions collects nominal qualitative data?

1 / 1 point

On a scale of 1-10, how would you rate your service today?

How many people do you usually dine with?

Is this your first time dining at this restaurant?

How many times have you dined at this restaurant?

Correct

“Is this your first time dining at this restaurant?” is a question that collects nominal qualitative data.

4.

Question 4

Why is internal data considered more reliable and easier to collect than external data?

1 / 1 point

Internal data has much larger sample sizes.

Internal data lives within a company’s own systems.

Internal data comes from people you know.

Internal data circumvents privacy restrictions.

Correct

Internal data is considered more reliable and easier to collect than external data because it lives within a company’s own systems.

5.

Question 5

A social media post is an example of structured data.

1 / 1 point

True

False

Correct

A social media post is an example of unstructured data.

6.

Question 6

Which of the following values are examples of a Boolean data type? Select all that apply.

1 / 1 point

One, two, or three

True or false

Correct

True or false and yes or no are examples of a Boolean data type.

Yes, no, or unsure

Yes or no

Correct

True or false and yes or no are examples of a Boolean data type.

7.

Question 7

The following is a selection from a spreadsheet:

Name	Attribute	Value
Agnes Shipton	Age	44
Agnes Shipton	Occupation	Entrepreneur
Henry Sing	Age	36
Henry Sing	Occupation	Editor

What kind of data format does it contain?

0 / 1 point

Short

Wide

Narrow

Long

Incorrect

8.

Question 8

Fill in the blank: Data transformation enables data analysts to change the _____ of the data.

1 / 1 point

accuracy

structure

value

meaning

Correct

Data transformation enables data analysts to change the structure of the data.