4/17 Q4 Vocab #2

What is the definition of 'Data Source'?

• where data originates from or it was found or recorded

• a type of data analysis method

• a programming language used for databases

• a tool for visualizing data

What is the definition of 'Crowdsourced Data'?

• information gathered from a large group of people, often through the internet, social media, or apps to create a dataset

• data collected only by professional researchers in a laboratory setting

• information generated by a single individual without external input

• data that is always verified and error-free

What is the definition of 'Table'?

• a systematic arrangement of data, typically organized in rows and columns, which facilitates the analysis and interpretation of information

• a device used for measuring temperature

• a type of software used for editing images

• a mathematical operation involving addition and subtraction

What is the definition of 'Records/Cases'?

• a row in a file and is made up of fields

• a column in a file and is made up of records

• a type of database software

• a method for encrypting data

What is the definition of 'Data Cleaning'?

• the process of identifying and correcting errors in raw datasets

• the process of visualizing data using charts and graphs

• the process of encrypting data for security purposes

• the process of collecting data from various sources

What is the definition of 'Messy Data'?

• inconsistent, mislabeled or incompletely formatted

• well-organized and clearly labeled

• completely error-free and standardized

• always numerical and sorted

What is the definition of 'Bias'?

• an error or unfairness that leads to skewed or inaccurate results

• a process of collecting data randomly

• a method to ensure accuracy in experiments

• a type of variable in an experiment

What is the definition of 'Missing Values'?

• when piece of data is not recorded or is left blank in a dataset

• when all data is perfectly recorded in a dataset

• when data is duplicated in a dataset

• when data is always numerical in a dataset

What is the definition of 'Missing at Random (MAR)'?

• the fact that the data is missing is independent of the observed and unobserved data

• the probability of missing data depends only on the observed data and not on the unobserved data

• the probability of missing data depends only on the unobserved data

• the data is missing completely at random

What is the definition of 'Missing not at Random (MNAR)'?

• a way of describing why some pieces of information might be missing related to the missing value

• a method for collecting missing data in surveys

• a statistical technique for imputing missing values

• a type of random sampling used in experiments