### Figure 3 is a Microsoft Excel Worksheet. Use it to answer questions 20 and 21....

Data Processing
WAEC 2023

Figure 3 is a Microsoft Excel Worksheet. Use it to answer questions 20 and 21.

 A B C D E 1 IDENTICATION NUMBER BASIC SALARY (N) TOTAL ALLOWANCE (N) TOTAL DEDUCTION (N) NET SALARY (N) 2 WASC/LPT/001 800000 60000 40000 820000 3 WASC/LPT/002 700000 40000 20000 720000 4 WASC/LPT/003 300000 10000 5000 305000 5 WASC/LPT/004 400000 20000 10000 410000

Figure 3

What formula will correctly display the total number of individuals involved in the computation as shown in Figure 3?

• A. =COUNT(A2:A5)
• B. =COUNTIF(A2:A5)
• C. =COUNTA(A2:A5)
• D. =SUM(A2:A5)
##### Explanation

The formula that will correctly display the total number of individuals involved in the computation as shown in Figure 3 is COUNTA(A2:A5).

The COUNTA function counts the number of cells that are not empty in a range. In this case, we want to count the number of cells in the A column that are not empty. The A column contains the identification numbers of the individuals involved in the computation. Therefore, the COUNTA function will return the total number of individuals involved in the computation.

The other formulas mentioned are:

COUNT: This function counts the number of cells that contain numbers in a range.
COUNTIF: This function counts the number of cells that contain a specific value in a range.
SUM: This function sums the values in a range.

In this case, we do not want to count the number of cells that contain numbers or the number of cells that contain a specific value. We want to count the number of cells that are not empty. Therefore, the COUNTA function is the most appropriate function to use.