A confounding variable is an extraneous variable that is related to your independent variable and might affect your dependent variable. In an ideal study, there will be no confounding variables.
For example, student accounts have a limit of $100 limit per day, while non-business accounts usually are limited to $500 withdrawals a day. For business accounts, the bank offers $1000 withdrawals in one day. Chase also offers customers a withdrawal limit of $1000 every 24 hours.
The Chase High School Checking account is for students age 13 to 17. A parent or guardian with an existing qualifying Chase checking account must be a co-owner. The monthly fee is $6, or $0 if certain requirements are met. When a student turns 19, this account becomes a Chase Total Checking account. With proof of student status, students age 17 to 24 can open a Chase College Checking account.