Scales Measurement
Most basic level of Measurement, which categorized into distinct groups that have no inherent order or ranking.
Nominal Scales
Examples of this particular scales:
Likert scale responses
Stages of Development
Levels of social support
Ordinal Scales
MEAN, MEDIAN, MODE
"The average of all data points."
Mean
CHARTS AND GRAPHS
Used for displaying the proportions of a whole
Pie Chart
The __________ between values are consistent and meaningful, allowing for the comparison of differences, but ratios are not meaningful because there is no absolute zero.
Interval Scales
In application in psychology, it is used to classify participants or variables into distinct groups without implying any ranking or quantitative differences.
Nominal Scales
MEAN, MEDIAN, MODE
"The most frequently occurring value in a dataset."
Mode
CHARTS AND GRAPHS
Used to show trends over time. Example is changes in anxiety levels across several months.
Line Graph
These are the examples of a certain scales
Education level (high school, bachelor’s, master’s, PhD)
Customer satisfaction ratings (poor, fair, good, excellent)
Socio-economic status (low, middle, high)
Ordinal Scales
According to its application in Psychology, It allows for the measurement of differences between variables but not ratios.
Interval Scales
MEAN, MEDIAN, MODE
"The middle value when data points are arranged in ascending order. Useful for skewed distributions."
Median
FREQUENCY DISTRIBUTION
Summarize how often each value or range of values occurs in the dataset.
Frequency Table
Ratio Scales
It provides the highest level of measurement precision, allowing for comparisons of both differences and ratios.
Ratio Scales
MEASURES OF DISPERSION
" The average of the squared differences from the mean. Indicates the spread of the data. Example is Variance reaction times."
Variance
PERCENTILES AND QUARTILES
It values below which a given percentage of observations fall.
Percentile
Scales of measurement are key in statistics and research for explaining how to measure and categorize different types of data.
Scales Measurement
True or false, these are some examples of ratio Scales:
Reaction times
Number of Correct responses on a cognitive task, and
physiological measures like heart rate or blood pressure
False
MEASURES OF DISPERSION
"The range within which the central 50% of data points fall, calculated as the difference between 75th percentile and the 25th percentile. Example is IQR of income data."
Interquartile Range
Summarizing characteristics of the sample such as age, gender, educational level
Ex: Demographic breakdown of survey participants
Describing Demographic Information