Analyzing exam scores

馃摉 Background The principal of a large school is interested in knowing if the test preparation courses are helpful and also know the effect of parental education level on test scores. 馃挭Objectives What are the average reading scores for students with/without the test preparation course? What are the average scores for the different parental education levels? Create plots to visualize findings for questions 1 and 2. Look at the effects within subgroups....

April 20, 2022 路 5 min 路 Adejumo Ridwan Suleiman

Where to focus a marketing campaign?

馃摉 Background A crowdfunding site wants to run a marketing campaign for the next quarter of the year. The marketing manager wants to target those segments that have donated the most in the past year. Objectives What are the top three categories in terms of total donations? What device type has historically provided the most contributions? What age bracket should the campaign target? Key Insights The average donation was $39....

March 16, 2022 路 3 min 路 Adejumo Ridwan Suleiman

Employee Turnover Prediction

馃挭馃A Picture is worth a thousand words Problem Statement The human capital department of a large corporation wants to know why their is a high employee turnover, they also want to understand which employees are more likely to leave, and why. Aim and Objectives Which department has the highest employee turnover? Which one has the lowest? Investigate which variables seem to be better predictors of employee departure. Recommendations to help reduce employee turnover Loading and Data head(df) ## # A tibble: 6 x 10 ## department promoted review projects salary tenure satisfaction bonus ## <chr> <dbl> <dbl> <dbl> <chr> <dbl> <dbl> <dbl> ## 1 operations 0 0....

February 21, 2022 路 7 min 路 Adejumo Ridwan Suleiman

DataCamp Competition - Reporting Sales Data

馃摉 Problem Statement The accounting department of a company that sells motorcycle parts operates three warehouses in a large metropolitan area. The company want鈥檚 their sales data analysed and want to capture sales by payment method. They also want to know the average unit price for each product line. Objectives What are the total sales for each payment method? What is the average unit price for each product line?...

January 27, 2022 路 6 min 路 Adejumo Ridwan Suleiman

DataCamp Competition - Was a website redesign successful

鈥滒煣慖f first you don鈥檛 succeed, try two or more times so that your failure is statistically significant鈥 馃摉 Problem Statement An early-stage start up in Germany has been working on a website redesign of their landing page. The team believes a new design will increase the number of people who click through and join the site.They have been testing the changes for a few weeks, and now they want to measure the impact of the change and need to determine if the increase can be due to random chance or if it is statistically significant....

January 25, 2022 路 5 min 路 Adejumo Ridwan Suleiman