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Note: this analysis was performed using the open source software R and Rstudio.

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 ~ TV, data = ad_sales)

plot(sales ~ radio, data = ad_sales)

This is the end of part 1 for my exploratory analysis.

library(ggplot2)
head(ad_sales)
## # A tibble: 6 × 6
##    ...1    X1    TV radio newspaper sales
##   <dbl> <dbl> <dbl> <dbl>     <dbl> <dbl>
## 1     1     1 230.   37.8      69.2  22.1
## 2     2     2  44.5  39.3      45.1  10.4
## 3     3     3  17.2  45.9      69.3   9.3
## 4     4     4 152.   41.3      58.5  18.5
## 5     5     5 181.   10.8      58.4  12.9
## 6     6     6   8.7  48.9      75     7.2
ggplot(data = ad_sales, aes(x = TV)) +
  geom_histogram()
## `stat_bin()` using `bins = 30`. Pick better value with `binwidth`.

This is the end of part 2 for my exploratory analysis.

Question 1

Yes, there is a relationship between x and y because as the numbers on both axis’ increase, they meet at similar spots.

Question 2

A coefficient is a number that is a constant and used in whichever mathematical expression you are doing. Yes, there is a relationship because as TV advertising increases, so do sales.

Question 3

We are able to see the effectiveness of any marketing strategies. There are limitation because for example we cannot gauge every body’s interest on social media platforms due to thousands of tweets, tik toks, etc. being created.

Question 4

You can plot the relationship, but it will be “messy” due to it’s effectiveness such as people not listening, changing stations, or as simple as showing no interest in the first place.

Question 5

Repetition or a catchy tune can be effective and create a more consistent graph, as people may be more interested in what is offered.

References