Complete SAS Programming Guide - Learn SAS and Become a Data Ninja - Index Options

Complete SAS Programming Guide - Learn SAS and Become a Data Ninja - Index Options

Assessment

Interactive Video

Information Technology (IT), Architecture

University

Hard

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The video tutorial discusses creating an index and explores two options: 'no miss' and 'unique'. The 'no miss' option helps save space by not maintaining missing values in the index, which is useful when the index variable has many missing values. The 'unique' option requires key variables to be unique, preventing duplicate values, which is important when updating observations. Examples are provided to illustrate the use of these options.

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5 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary focus of the course as mentioned in the introduction?

Learning about database management

Exploring syntax and code for index creation

Understanding data structures

Creating a user interface

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the 'no miss' option do when creating an index?

It duplicates missing values

It maintains missing values in the index

It highlights missing values

It removes missing values to save space

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In which scenario is the 'no miss' option particularly useful?

When the index variable has no missing values

When the index variable has many missing values

When the index variable is a string

When the index variable is a constant

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What requirement does the 'unique' option impose on key variables?

They must be numeric

They must be unique

They must be alphabetical

They must be missing

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is the 'unique' option important when updating observations?

It ignores unique values

It increases the index size

It allows duplicate values

It prevents duplicate values from being added