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Data Week - 2

Authored by Mehdi Mehdi

Education

University

Used 3+ times

Data Week - 2
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20 questions

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1.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What does SQL stand for?

Simple Query Language

Structured Question Language

Structured Query Language

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

40 e-mails are detected as spam while 60 e-mails are ham.

What is the probability that a randomly selected e-mail is spam?

60%

40%

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

40 e-mails are detected as spam while 60 e-mails are ham.

What is the probability that a randomly selected e-mail is ham?

60%

40%

4.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What is the purpose of scaling?

Detecting outliers

Having data of each column in the same scale

Splitting the data into train and test

5.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

What does 2 * numpy.array([1, 2, 3]) return?

array([2, 4, 6])

array([3, 4, 5])

array([1, 2, 3])

6.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Which statement are correct for normal distribution?

It doesn't have a skewness

Mean, median, and mode are equal

68% of samples are located within the range of first standard deviations.

All of statements are true.

7.

MULTIPLE CHOICE QUESTION

10 sec • 1 pt

Which of the followings can be used in imputation techniques?

Mean

Median

Mode - most frequency

All of them

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