Question and Category Score Calculations

Perceptyx recommends using a 5-point Likert scale, with results reported as percent favorable:

• Responses marked Strongly Agree/Agree (5/4) are considered Favorable.

• Responses marked Neither Agree nor Disagree (3) are considered Neutral.

• Responses marked Disagree/Strongly Disagree (2/1) are considered Unfavorable.

If an organization includes N/A as an option, these responses are not included in the overall calculation.

This article walks through:

• Calculations for Questions 
• Calculations for Categories/Indices

Calculations for Questions 

% Favorable = Proportion of valid respondents who selected Strongly Agree & Agree

• Question % Favorable (i.e., proportion of Strongly Agree and Agree) = [23 + 16] / 49 = 79.6%

• Question Mean = [(0x1) + (3x2) + (7x3) + (23x4) + (16x5)] / 49 = 4.10

Calculations for Categories/Indices

Category/Index scores are calculated using all valid responses to the questions within a particular Category/Index. It is not necessarily the straight average of all question scores, unless every respondent has responded with a valid response to all questions in the category. Category/Index scores are weighted by the number of responses per question.

Category/Index score = sum of the people who responded in a particular way (e.g., Strongly Agree or Agree) divided by the sum of the number of valid responses across all questions.

• Category/Index % Favorable (i.e., proportion of Strongly Agree and Agree) = [62 + 92] / 198 = 77.8% 

• Category/Index Mean = [(2x1) + (11x2) + (31x3) + (92x4) + (62x5)] / 198 = 4.00