title: “Bivariate analysis for marketing managers” author: “Ava Damo, follow me on Twitter:” date: “09/03/2026” output: html_document editor_options: chunk_output_type: console —
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Note: this analysis was performed using the open source software R and Rstudio.
Objective
The objective of this tutorial is to explain how bivariate analysis works.This analysis can be used by marketers to make decisions about their pricing strategies, advertising strategies, and promotion stratgies among others.
Bivariate analysis is one of the simplest forms of statistical analysis. It is generally used to find out if there is a relationship between two sets of values (or two variables). That said, it usually involves the variables X and Y (statisticshowto.com).
- Univariate analysis is the analysis of one (“uni”) variable.
- Bivariate analysis is the analysis of exactly two variables.
- Multivariate analysis is the analysis of more than two variables.
Dataset - We will be using two online datasets available in R for this tutorial
plot(y3 ~ x2, data = anscombe, pch = 16)
abline(lm(y3 ~ x3, anscombe), col = "grey20")
Question 1:is there a relationship between x and y? If so, what does the relationship look like?
Yes, there is a relationship here, X and Y are both increasing.
library(readr)
library(readr)
ad_sales <- read_csv('https://raw.githubusercontent.com/utjimmyx/regression/master/advertising.csv') ## New names:
## Rows: 200 Columns: 6
## ── Column specification
## ──────────────────────────────────────────────────────── Delimiter: "," dbl
## (6): ...1, X1, TV, radio, newspaper, sales
## ℹ Use `spec()` to retrieve the full column specification for this data. ℹ
## Specify the column types or set `show_col_types = FALSE` to quiet this message.
## • `` -> `...1`plot(sales ~ radio, data = ad_sales)
Question 2:Is there a relationship between TV advertising and Sales? If so, what does the relationship look like?
Yes there is a relationship. As the TV sales increases so does the sale. It is a linear relationship.
Question 3:Can you plot the relationship between radio advertising and Sales? If so, what does the relationship look like?
Yes, as radio sales increases so does sales. Although there is not a very strong relationship here.
plot(sales ~ radio, data = ad_sales)
### Question 4: Explain one of the functions you learned in your own
words. ### I learned that these functions help us make graphs and plots
from different sets of data.
References
Bivariate Analysis Definition & Example https://www.statisticshowto.com/bivariate-analysis/#:~:text=Bivariate%20analysis%20means%20the%20analysis,the%20variables%20X%20and%20Y.