gl
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=(SUM(A1:D1) – MIN(A1:D1)) / (COUNT(A1:D1) – 1)

Obviously change the range in this formula to the appropriate range that contains your data. Also be mindful of the parentheses! It’s always a good idea to evaluate your formula manually to perform a check on your formula’s logic.

This takes an average of all items, excluding the lowest count. What’s nice about this, is you can apply this formula to any number of entries, and it will work (assuming you only want to drop the single lowest answer).

If you want to drop the second lowest grade too, you need to also subtract SMALL(A1:D1,2) from the numerator and change -1 to -2 in the denominator.
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Heavy Excel user.

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TaZ

For this project, you’ll be creating a program that reads data directly from wtmp and then produces a list of all logins that appear in the first 500 records of the log. The list should include the user ID associated with the login, as well as the terminal to which they connect, the IP address from which they connected, and the time of the connection.

The list should be sorted primarily by user ID, secondarily by terminal, and, finally, but connection time.

Your program will read its input data from a copy of the wtmp log located in the same directory as your executable. (This requirement is primarily to simplify grading.) The log is a binary file composed of a consecutive list of utmp structures, which are defined in the system library utmp.h . Consult the manual page for wtmp for a description of the structure.

As noted above, a file named wtmp will be located in the same place as your executable. Upon execution, your program will:
1. Open the file and read its entire contents or 500 entries, whichever is smaller, into memory.
2. Sort the in-memory copy of the data so that it is ordered first by userid, then by terminal, and finally by timestamp,
3. Print only the login records to the screen.

When you print the output, print the fields in fixed width columns in the following order: UID, terminal,
IP address, time. The IP address should be presented in traditional dotted-octet form (eg 127.0.0.1) and the time should be in a user readable format, not Epoch time. Pick column widths that leave whitespace between the fields and make sure fields are left-justified.
Your program should not prompt the user for any input, nor should it print anything other than the reordered data.

CODE REQUIREMENTS:

You must store the login entries in memory when your program runs. You may, if you wish, also store the entries you will not be printing, though this is not required. I recommend using an array of structures for this, though it is not required.

Sorting may be accomplished in any way you see fit. You will almost certainly need the strncmp() function for this. Check the manual page for more details. You may also wish to investigate qsort().
If you program contains multiple functions, split them up so that main() is in one file and the remaining functions are in one or more additional files. Remember to include .h files and appropriate comments, etc.

You must provide a Makefile with your submission. Your Makefile must provide a default rule which
compiles, but does not run, the program, a clean rule which delete .o files and the executable, and a run rule which will compile, if necessary, and run your program.

As usual, your code must also obey the following restriction:
· Your code is well-formatted, adequately commented, and free of global variables.
· Your code compiles without warning using the -ansi and -pedantic flags.
You should submit your files (including, minimally, one .c file and one Makefile) using submit. DO
NOT submit the wtmp file used in testing.

HINTS:

The finished version of this program can be quite short (the reference implementation is 108 lines over three files, not counting comments), but additional research on your part will be required to complete the program.

Here are some general tips to get you headed in the right direction:
· The man page for wtmp defines the utmp structure. The comments have useful information.
· Only successful logins will end up with a type value equal to USER PROCESS.
· Unix boxen think of time as the number of seconds elapsed since midnight on 1 January 1970.
· The time.h library has a number of useful functions for dealing with time-related stuff.
· There’s a variant of printf that writes its output to a string.
· Host byte order for IP addresses on the lab machines is little-endian
Well i initially just wanted help getting started because im confused on what exactly im coding…

You would get better results when asking only 1 question at a time especially when it comes to excel. These are both complicated to explain.

To simplify the second answer goto youtube.com
type in "excel absolute cell references"
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Check out the below link. It has very good tutorial on the points you have mentioned.
References :
http://spreadsheets.about.com/od/excelformulas/ss/formula_begin.htm
You can reach me (privyfrnd) for more info.

Cell Ref:
http://www.cpearson.com/excel/relative.aspx
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