Similar tasks

Task 1.

Display 0.1 as 0.100

Solution

0.000

Task 2.

Display 0.1 as .1

Solution

To suppress insignificant zeroes, use hash (#) instead of zero.

#.#

Sum or count only certain values in a range

Tools: functions SUMIF, COUNTIF

Level: intermediate

Problem

You have a sequential list of grades for every student in your class. You need to compute average grades for every student that will be their final grades.

	A	B
1	Student	Grade
2	Alisha	3
3	Becky	4
4	Cathleen	3
5	Becky	3
6	Alisha	2
7	Becky	3
8	Cathleen	4
9	Alisha	4
10	Cathleen	4
11	Alisha	3

Solution

A student's average grade is sum of her grades divided by number of her grades. We will use two conditional lookup functions SUMIF and COUNTIF in a single formula.

1. (OPTIONAL) Select range A2:A11 and name it "students".

2. (OPTIONAL) Select range B2:B11 and name it "grades".

3. Active cell C1. Type "Alisha"

4. Active cell C2. Enter function =SUMIF(students,C1,grades).

5. Active cell C3. Enter function =COUNIF(students,C1).

6. Active cell C4. Enter =C2/C3.

7. Type in cells D1 "Becky" and E1 "Cathleen".

8. Copy range C2:C4 to D2:E4.

	A	B	C	D	E
1	Student	Grade	Alisha	Becky	Cathleen
2	Alisha	3	12	10	11
3	Becky	4	4	3	3
4	Cathleen	3	3.00	3.33	3.67
5	Becky	3
6	Alisha	2
7	Becky	3
8	Cathleen	4
9	Alisha	4
10	Cathleen	4
11	Alisha	3

You should get as a result the following table.

In practice, we could have just as well combined formulas in rows 2-4 in a single formula =SUMIF(students,C1,grades)/COUNTIF(students,C1).