Should a Publisher make changes in the economic books market due to Covid-19 Pandemic? This is the central question of my project "Covid-19 impact in Economics Books" answers. This is the main problem, if you prefer, solved by my project "Covid-19 impact in Economics Books".
How did I answer this question?
I used the Scipy.Stats library (for statistical functions) with Python, focusing on hypothesis testing, mainly: scipy.stats.ttest_ind (for price), scipy.stats.ttest_rel (for number of pages) and scipy.stats.chi2_contingency (for subjects).
First of all, I collected data manually in order to better understand all the workflow. For this, I chose economics books published in October 2019 (before Covid-19 pandemic) and in October 2020 (during Covid-19 pandemic) to compare the differences. Because it would be easier to choose titles published in English, all these books are being sold by Amazon.co.uk.
Secondly, I prepared a csv file using Excel with all the information collected in which were included the prices, number of pages and main/specific subject of these books.
Thirdly, I tested my hypothesis using Python with Scipy.Stats library.
What were the conclusions for price, number of pages and main/specific subject of these books?
Using scipy.stats.ttest_ind for price, I concluded that there is not a variation in the number of pages between the books published in October 2019 and October 2020.
In what respects to the price, the result of scipy.stats.ttest_rel showed me that there is not a variation in the prices from the different books when comparing October 2019 and October 2020.
Finally, the main/specific subject is independent of the "before covid-19" and "after covid-19", as shown by the result of scipy.stats.chi2_contingency.
In this sense, and answering the question that is at the beginning, it seems to be a bad idea making changes in the economic books market due to Covid-19 Pandemic.
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