Data Types
This data type includes numeric values that can be added or averaged meaningfully.
What is quantitative data?
This is the simplest measurement scale, classifying data into distinct groups without any order.
What is the nominal scale?
Removing duplicate records and correcting errors is part of this data process.
What is data cleaning?
The science of collecting, analyzing, and interpreting data.
What is statistics?
The average of a set of numbers.
What is the mean?
Gender, color, and product type are examples of this kind of data.
What is categorical (or qualitative) data?
This scale involves ordering data but does not measure the exact differences between values.
What is the ordinal scale?
Selecting specific rows based on a condition is known as this.
What is data subsetting (or filtering)?
A summary measure calculated from a sample.
What is a statistic?
The middle number when data is ordered.
What is the median?
This type of quantitative data has a finite number of possible values.
What is discrete data?
This scale has equal intervals but no true zero point, like temperature in Celsius.
What is the interval scale?
This chart displays the distribution of a single continuous variable.
What is a histogram?
This term refers to data collected from every member of a census.
What is a population?
The most frequently occurring number in a dataset.
What is the mode?
Temperature and weight are examples of this type of quantitative data.
What is continuous data?
This scale has equal intervals and a true zero, allowing for meaningful ratios.
What is the ratio scale?
This type of graph shows trends over time.
What is a line graph?
This type of statistics involves making predictions or generalizations.
What is inferential statistics?
This measures how much the data values vary from the mean.
What is variance?
What kind of data results from counting rather than measuring?
What is discrete data?
Classify the following examples by their measurement scale:
Shirt sizes (S, M, L)
Annual income in dollars
What Ordinal (shirt sizes) and Ratio (income)?
This type of plot shows the median, quartiles, and potential outliers.
What is a box plot?
The portion of the group that a researcher is interested in studying.
What is the sample?
This statistic measures both direction and strength of linear relationship between two variables.
What is covariance?