D467 Exploring Data - Set 3 - Part 1

Correct Answer: To join two or more text strings together

The CONCATENATE function is used in spreadsheets to combine text from different cells into a single text string.

Correct Answer: Boolean data

Boolean data represents values with only two possible options, such as "True/False" or "Yes/No."

Correct Answer: CAST

The CAST function in SQL is used to convert data from one data type to another, such as converting a string to an integer.

Correct Answer: To protect sensitive data by removing identifying information

Data anonymization is a process used to protect people's private or sensitive information by removing or masking identifying details.

Correct Answer: Pie chart

Pie charts are commonly used to compare parts of a whole, showing how each category contributes to the total percentage.

Correct Answer: A collection of related data stored in a table

A dataset is a collection of data, often organized in a table or spreadsheet, that can be analyzed as a single unit.

Correct Answer: The total number of rows that meet a specific condition

The COUNT function in SQL returns the number of rows that match a specified condition, such as counting all non-null entries in a column.

Correct Answer: To describe the structure and characteristics of the data

Metadata provides information about the data itself, such as its source, format, and structure, which helps in understanding and managing the dataset.

Correct Answer: COUNTA

COUNTA returns the total number of values (non-empty cells) within a specified range in a spreadsheet.

Correct Answer: Ensuring data is accurate and reliable before processing

Data validation is the process of checking data for accuracy and quality before it is used in analysis or further processing.

Correct Answer: To remove duplicate rows from the result set

The SELECT DISTINCT statement is used to return unique values by removing duplicates from the result set.

Correct Answer: COUNTIF

COUNTIF is used to count the number of cells in a range that meet a specified condition, such as counting how many values are greater than a certain number.

Correct Answer: First-party data is collected directly by an organization, while second-party data is acquired from a trusted partner

First-party data is collected by the organization itself, while second-party data is obtained from a trusted partner who collected it.

Correct Answer: Groups rows that have the same values into summary rows

The GROUP BY clause in SQL groups rows that have the same values in specified columns and allows aggregate functions like SUM or COUNT to be applied to these groups.

Correct Answer: To ensure that data is accurate, secure, and compliant with regulations

Data governance involves managing the accuracy, security, and compliance of an organization's data to ensure it is used properly and meets regulatory requirements.

Correct Answer: UPDATE

The UPDATE statement is used in SQL to modify existing records in a table based on specified conditions.

Correct Answer: The accuracy, consistency, and reliability of data over its lifecycle

Data integrity refers to maintaining and ensuring the accuracy, consistency, and reliability of data throughout its lifecycle.

Correct Answer: MAX

The MAX function returns the largest value from a set of values in SQL.

Correct Answer: Highlights cells based on specific conditions

Conditional formatting changes the appearance of cells based on certain criteria, making it easier to identify specific values or trends in a dataset.

Correct Answer: To remove extra spaces from text data

The TRIM function removes leading, trailing, and repeated spaces in text data to ensure consistency.