08 Feb 2022

Posted on:

11 Apr 2020

2

# Regression analysis quiz question

The quiz question You have an ice-cream shop. You noticed a relationship between the number of cones you order and the number of ice-creams you sell. Is this a suitable situation for regression analysis? has answer as "NO" Could you clarify why it is so?. The reason I think it is yes is.. As the sales increase the cones demand increases so the owner order more cones to serve ice cream. So if I have the data of cones ordered and the sales figure, based on regression analysis the future sales can be predicted based on the cones the owner ordered.
Instructor
Posted on:

14 Apr 2020

0
Hi Amar,  thanks for reaching out! Unfortunately, the number of cones is not a good predictor. It has no predictive power, but instead is dependent on the output variable. That means that the sales of ice cream determine how many cones are ordered. But not the other way around. Consider the following: the owner of an ice cream shop buys a large amount of ice cream cones. But if it's in the middle of winter and its cold outside, so no one comes to buy any ice cream. So, the number of cones bought is not a good predictor for sales.   Best,  Eli
Posted on:

08 Feb 2022

0

Dear Elitsa,

I had a similar question and wanted to point out that the question does not indicate which variable is dependent and which is independent. So, if we swap the variables for the example you have just provided it seems like the relationship could be suitable for regression, because, the number of sold ice creams does predict the number of cones ordered

Best,
Nikita Ignatev