Bivariate frequency distribution
Also called: Bivariate distribution · Topic: Economic Data: Census, NSS, Surveys and Statistical Tools · NCERT: Class 11, Ch 3 "Organisation of Data"; Class 11, Ch 8 "Use of Statistical Tools"
Meaning
A bivariate frequency distribution is a frequency table for two variables at once. Classes of one variable form the rows and classes of the other form the columns. Each cell shows a joint frequency, which is the number of cases that fall in both classes. It is the starting point for studying correlation between the two variables.
Example
In NCERT's table of 20 firms, sales are set against advertising spending. One cell shows that 3 firms had sales of Rs 135-145 lakh and advertising spending of Rs 64-66 thousand.
Don't confuse with
- Univariate distribution: this shows the frequencies of one variable only, such as the marks of 100 students.
Related concepts
- Raw data
- Classification
- Chronological classification
- Spatial classification
- Qualitative classification
- Quantitative classification
- Attribute
- Continuous variable
- Discrete variable
- Frequency