Questionnaire colour and mail sunray response rate

A split run test was performed to assess the impact of mail questionnaire c olour on response rates. A total of 4,250 questionnaires was mailed, half o n pastel yellow paper stock, half on white, to organisational respondents. Response rates were 28.24% for the yellow questionnaires (600 of 2,125 were returned) and 29.32% for the white (623 of 2,125). The chi-squared test of significance was applied to the data. As this indicates there is no signif icant difference between the response rates, it is concluded that the use o f yellow colour paper has no impact.