Monash Cafeteria Questionnaire

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Assignment 2 Monash Cafeteria Questionnaire 1. Statistics Q2 (1 to 5) N Valid 132 Missing 0 Mean 2.40 Median 2.00 Mode 2 Q2 (1 to 5) Frequency Percent Valid Percent Cumulative Percent Valid 1 33 25.0 25.0 25.0 2 40 30.3 30.3 55.3 3 36 27.3 27.3 82.6 4 19 14.4 14.4 97.0 5 4 3.0 3.0 100.0 Total 132 100.0 100.0 Based on the output above, it is estimated that the current purchase behaviour is that majority of students usually take-away their purchases. This is demonstrated by ‘usually take-away’ response frequency of 30.3% and mode=2. ANOVA Q29 (1 to 7) Sum of Squares df Mean Square F Sig. Between Groups 5.216 4 1.304 1.077 .371 Within Groups 153.754 127 1.211 Total 158.970 131 To determine whether the sample should be stratified on the basis of the purchase behaviour of students (Q2), the above ANOVA results are analyzed. The ANOVA table is used to determine whether the overall satisfaction level of student will differ depending on the purchase behaviour group they belong to e.g. ‘always take-away’ group. Since the Fstat value (1.077) is less than the Fcrit value (4,120,.05)=2.45, we conclude that there is no difference between the overall satisfaction levels of students with different purchase behaviours. Therefore the sample should not be stratified based on this grouping. 2. The proportion of people satisfied with the service quality can be represented by the following equation: p ̃=(X+2)/(n+4) = 91/136 = 0.6691 = 67% Satisfaction Frequency Percent Valid Percent Cumulative Percent Valid Satisfie 89 67.4 67.4 67.4 Unsatisf 43 32.6 32.6 100.0 Total 132 100.0 100.0 Bound: p ̃±2√(var(p ̃)) NOTE: FPC is not required as the sample number (132) is less than 10% of the population number (approximately 40,000). p ̃±2√((p ̃(1-p ̃))/(n+4)) p ̃±2√((0.6691(1-0.6691))/136) B =

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