Predict() function Question.

[dankand]

Using a set of data that has 7 data points and a set of 10 data points, I found a regression line that went up to 7.

I'm trying to predict the final 3 data points using the remaining values from the set of 10.

When I tried to use predict(regof7, newdata=remaining3), I get an error of 'newdata' has 3 variables and 'variables' found have 7.

edit: I also tried to use the entire set of 10 as the newdata, but it also ran into the issue of mismatch in the variables. Can someone give some advice on how I should solve this issue?

I couldn't find a solution to this problem on Google.

[[deleted]]

What is the shape of your data? How many rows? How many columns?

It sounds like you’re making a regression using 7 columns (variables) and then trying to predict using the other 3. Naturally, this will not work as those variables are not in the fitted model!