Analyse the Cycling Time-Trial Data Below

question 31

Multiple Choice

Analyse the cycling time-trial data below. Thirty-two elite cyclists were randomly allocated into one of four groups. Without using SPSS, calculate the mean and total for each group. The groups were as follows
i. Received caffeine and were told it was
ii. Received caffeine and were told it was not
iii. Received no caffeine and were told it was not
iv. Received no caffeine but were told it was
Group 1-
v. Mean: 45.9 km
vi. Total:367 km
Group 2
vii. Mean:39.9 km
Viii. Total:319 km
Group 3
ix. Mean:38.9 km
x. Total:311 km
Group 4
xi. Mean:46.8 km
xii. Total:374 km
How would you calculate the total sum of squares?

• A) SST = SSW + SSB
• B) SST = SSW - SSB
• C) SST = SSB / SSW
• D) SST = SSB × SSW

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Definitions:

Z-Score

Scores for the standard normal distribution measured in standard deviation units.

Standard Normal Distribution

The standard normal distribution is a special case of the normal distribution with a mean of zero and a standard deviation of one, used in z-tests.

Mean

To determine the arithmetic average, one sums up every number in the collection and divides by the number of elements in the collection.

Standard Deviation

An indicator that measures how much a set of data points spread out or diverge.