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A survey has been conducted on 30 students to measure how much time they spend in the University canteen, between 9 am and 9 pm. There are 30 observations in the data-set, measured in minutes:
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Order Paper Nowa. What type of variable is this? And how should it be defined in the SPSS Variable view?
b. While the chronometer could record minutes and seconds, data were only registered in minutes. Two rounding procedures can be chosen: (a) rounding to the nearest minute (e.g. 10 minutes and 20 seconds = 10 minutes; 10 minutes and 40 seconds=11 minutes); (b) registering only minutes whatever the number of seconds (e.g. 10 minutes and 1 second = 10 minutes, 10 minutes and 59 seconds = 10 minutes). Are the errors generated by rounding through (a) or (b) systematic or random? If systematic errors are generated, are they downward or upward biases?
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