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WITCHER [35]
3 years ago
14

In preparing categorical variables for analysis, it is usually best to a. combine as many categories as possible. b. convert the

categories to numeric representations. c. let them remain categorical.
Computers and Technology
1 answer:
Genrish500 [490]3 years ago
5 0

Answer:

In the given question the correct option is missing, which can be described as follows:

"It transforms binary, null variables into the groups."

Explanation:

These variables are real variables, which could also take up a series of variables, that are either constrained or defined. This can be regarded as a listing. It is used to analyze and convert it, into binary in the following ways, and wrong choices can be described as follows:

  • In option a, It can't combine, it only converts.
  • Option b and Option c is wrong because, it can't convert numeric, it only convert binary number to dummy variables.

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3 years ago
In a multiple-column record of a data file, ______ represent different variables and _______ represent different cases
Nookie1986 [14]

Answer:

columns, rows

Explanation:

In Computer programming, a atabase schema refers to the logical design of the database while the database instance refers to a snapshot of the data found in a database at a given instant in time.

Basically, in database management, the term "schema" is used to denote a representation of data while the term "instance" is used to denote an instance of time.

A database schema is a structure which is typically used to represent the logical design of the database and as such represents how data are stored or organized and the relationships existing in a database management system. There are two (2) main categories of a database schema; physical database schema and logical database schema.

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4 0
2 years ago
Some students are studying the amount of pollution in a river They are using a computer to measure the pollution level using sen
Tpy6a [65]

Answer:

optical sensors

Explanation:

optical sensors measure the amount of gases like carbon dioxide and carbon monoxide in the air

4 0
2 years ago
You have been given a laptop to use for work. You connect the laptop to your company network, use it from home, and use it while
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4 0
2 years ago
An online conference room reservation system lets a user reserve rooms. The user is required to enter contact information and re
lisov135 [29]

Answer:b)Reserve Room, Enter Contact Information, Enter Reservation Detail

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The situation mentioned in the question will take place for the reservation of the room through the instances in the form like filling the contact details for the identification , filling out reservation information as well for getting the knowledge about the room requirement by the person.

These details help in reaching out the particular person if required, number of days he wants to book the room,any extra facility he would like to have etc. After these detail filling activity the room can be reserved successfully.Thus , the most appropriate option is option (b).

Other options are incorrect because room reservation cannot be done without any formality as mentioned in the question and entering contact detail and reservation detail one by one.

7 0
3 years ago
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