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Question 25
Using examples, distinguish between valid tests and reliable tests of athletic performance.
Step 1
Answer
A valid test of athletic performance measures what it is intended to measure. For example, a 50-meter sprint test effectively measures speed, as it directly assesses the athlete's ability to run fast over a set distance. On the other hand, a reliable test consistently produces the same results when repeated under similar conditions. For instance, a vertical jump test can be deemed reliable if an athlete achieves similar jump heights each time they perform the test. Therefore, while validity addresses whether a test measures the right attribute, reliability ensures that the measurement is stable and consistent.
Step 2
Answer
An example of a valid test is the 50-meter sprint test for measuring speed. This test accurately reflects an athlete's speed over a short distance. An example of a reliable test is a timed run around a 400-meter track, which can indicate an athlete's aerobic fitness. If an athlete runs this distance consistently over multiple attempts, it shows that the test is reliable. Such a test can reveal improvements in performance reliably if conducted regularly.
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