# MIS250 (recorded video&assignment)

Need help with my Excel question – I’m studying for my class.

• RAND / RANDBETWEEN (see note below)
• INT –> ROUND / ROUNDUP / ROUNDDOWN (see note)
• COUNT & COUNTBLANK
• SUM
• AVERAGE
• MIN & MAX
• MODE & MEDIAN
• QUARTILE
• STDEV
• RANK
• TOPIC NOTES:
• The RAND() & RANDBETWEEN() functions will be used very often in class and are intended for you to use in your own practice outside of class, but you will not use these functions to compose any solution to any problem on the assessments you will complete in this course.
• We will use the INT() function in a demonstration to derive the ROUND() family of functions. Thereafter, you should use the ROUND/UP/DOWN functions to mathematically round values to specified numbers of decimal places, avoiding the complexity of using the INT() function to do those things.
• TOPIC NOTES:
• Do not use the LARGE() or SMALL() functions in place of the MAX() or MIN() functions, respectively. Though they are functionally equivalent, they are not computationally equivalent.
• For this course, you will always be safe using the legacy versions of functions when there are more evolved options available. For instance, just use the STDEV() function instead of STDEV.S(), etc.
• Do not use the DAYS() function to calculate the number of days between two dates. All this is, is simple subtraction.
• text-related functions:
• Concatenation (adding text strings together using the “&” operator)
• LEN
• TRIM
• SEARCH / FIND
• SUBSTITUTE
• LEFT / RIGHT / MID
• UPPER / LOWER
• Use the SUM() function for adding a bunch of values; do not use it for adding just two or three values. (Using the “+” sign is less typing anyway!)