3 3 what is the level of measurement for the

Info icon This preview shows pages 3–5. Sign up to view the full content.

View Full Document Right Arrow Icon
3 3. What is the level of measurement for the independent and dependent variables? The level of measurement of the independent variable is nominal, where 0 equals no happy face and 1 equals a happy face. The level of measurement for the dependent variable is a ratio measure because absolute zero equals no tip and the value of tip percent is weighted based on that zero, such that a 50% tip is twice as much as a 25% tip. 4. Before performing data analyses, make a prediction about the pattern of results you expect to see and why. That is, which condition do you think will result in the highest percentage of tips, on average? Why? Note: do not base your prediction on the data itself, rather your expectations going into the study. That is, before you collect any data, what would you expect to see? Customers who receive a check with a happy face will tend to leave a greater tip than customers who receive a check without a happy face. It can be presumed that the happy face on the check acts as a non-verbal communicator of the waitress’ positive and friendly attitude, which may be conveyed to the customer, after which they may be willing to leave a greater tip. 5. Calculate the mean, median, and mode and the standard deviation for the experimental group using SPSS. Table 1. Statistical Analysis of Experimental Group Participant Tip Percent Valid 22 N Missing 0 Mean 33.0455 Median 28.5000 Mode 21.00(a) Std. Deviation 13.95393 Sum 727.00 (a) Multiple modes exist. The smallest value is shown
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon