minor change to TDM 10200 Project 5

Author: mdw333

projects-appendix/modules/spring2025/pages/10200/project5.adoc

@@ -83,7 +83,7 @@ In the grocery store file:
 
 `/anvil/projects/tdm/data/8451/The_Complete_Journey_2_Master/5000_transactions.csv`
 
-there are more than 10 million lines of data, as we can see if we check `dim(myDF)`.  Each line corresponds to the purchase of an item.  The `SPEND` column is negative when a purchase is refunded, i.e., the item is returned and the money is given back to the customer.
+there are more than 10 million lines of data, as we can see if we check `myDF.shape`.  Each line corresponds to the purchase of an item.  The `SPEND` column is negative when a purchase is refunded, i.e., the item is returned and the money is given back to the customer.
 
 Create a smaller data set called `refundsDF` that contains only the lines of data for which the `SPEND` column is negative.  Make a table of the `STORE_R` values in this `refundsDF` subset, and show the number of times that each `STORE_R` value appears in the `refundsDF` subset.