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Parallel comparative analysis; A tool for making decisions based on relative importance

Study guide




What is the best way to choose between several different options? This is especially challenging when your options are slightly different, are a criterion for personal decision-making, or when you do not have objective data to use in decision-making. Pair comparative analysis helps you find the differences between the different options.

Pair comparative analysis is a decision-making tool that helps to find the relative importance of options.

About the pairwise comparative analysis tool

Pair comparative analysis helps you find the relative importance of several options in comparison. This will help you find the most important problem that needs to be solved as soon as possible or choose the most effective solution. It also helps you set priorities when faced with conflicting needs.

This tool is especially useful when you do not have objective data to use in decision making. It is also an ideal tool for comparing different and subjective options. For example, this model will be very useful when you need to consider the relative importance of competence, skills, experience and the ability to work in a team when hiring people.

Making such decisions is usually much more difficult than when, for example, you have to compare three similar IT systems, because in such cases you can use decision matrix analysis or financial analysis.

How to use this tool?

1. Make a list of all the options you want to compare. Assign letters to each option. (A, b, c, d and…).

۲. In a table, write your options as titles in vertical and horizontal rows. This is to compare the options with each other.

Close the cells in the table to compare options with itself. Houses that do the same comparison twice should also be closed. This will make sure that you do not make any comparisons more than once.

3. In each of the empty cells in the table, compare the option on the horizontal with the option on the vertical. Decide which option is more important, then write the most important option in the table cell. For example, if option B is more important when comparing options A and B, write down the letters B in the box associated with those two.

4. Rate the difference that options are important. A score of zero is for options that are no different, and for example you can assign a score of 3 to the highest difference between two options.

5. Finally, add up the scores for each option. You can convert these points into a percentage of the total points.

6. Use your senses and adjust the results manually if necessary.

Example of pairwise comparison analysis

For example, a philanthropist has to choose between several nonprofits that are requesting funding. In order to be able to spend more money on them, he has to choose a small number of them and he has these options:

  • Overseas development project.
  • In-country study project.
  • University funding.
  • Assistance to the victims.

First, he draws a table like Table 1 for pairwise comparison analysis.

Table 1: Pair Comparative Analysis Table

A: External development B: Internal education A: University D: Help
A: External development
B: Internal education
A: University
D: Relief

He then compares the options, writes down the most important ones, and scores the differences. Table 2 shows this step.

Table 2: An example of a completed pairwise comparison analysis table

A: External development B: Internal education A: University D: Help
A: External development A, 2 ج, ۱ A, 1
B: Internal education ج, ۱ B, 1
A: University ج, ۲
D: Help

Finally, he adds up the scores of the various options and converts them all to a percentage of the total score. The following results are obtained:

  • A = 3 (37.5%)
  • B = 1 (12.5%)
  • ج = 4 (50%)
  • د = ۰

He decides to help fund the university and budget for an overseas project.

What strategies do you have for making decisions in your personal and professional affairs? Have you ever used common analytical tools in management science? How efficient are these tools? Do you think these tools are also useful for everyday decisions?

Source

mindtools

.



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