Exam 3: Basic Statistics

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A simple ANOVA is a statistical measure used to determine differences between three sets of scores.

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A physical education instructor administered a leadership aptitude survey and ranked the scores (X) of the 15 students. A tennis tournament was held for the same students and their order of finish is shown below (Y). Calculate the correlation between leadership aptitude and the finish in the tennis tournament. Student 1 1 9 2 2 10 3 3 3 4 4 12 5 5.5 5 6 5.5 1 7 7 15 8 8 13 9 9 8 10 10 11 11 11 2 12 12 7 13 13 4 14 14 6 15 15 14

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Use the following data to answer this question: 10, 9, 7, 7, 6, 5, 4, 2, 1. What is the rank of the score 7 in this distribution?

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17 2 16 4 15 5 14 7 13 7 12 8 11 10 10 9 9 5 8 3 -A student runs the 50-yard dash in 6.1 seconds. If the mean is 6.52 and the standard deviation is .25, what is the student's z-score?

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When a frequency distribution is severely skewed to the right,

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If there is a negative relationship between two physical measures:

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The Pearson Product correlation procedure requires that data be at least ordinal in nature.

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Calculate the mean for the simple frequency distribution below. 53 2 52 5 50 5 49 7 48 10 47 4 43 7 41 3 38 2 37 1

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If a normal distribution of scores has a mean of 55 and a standard deviation of 10, what range of values would contain 99.73% of the scores?

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A t-test is a statistical measure that should be used when there is a high correlation between more than two sets of scores.

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From the data below on the 600-yard walk-run test (time in seconds), calculate the standard deviation. Group X f - 266-280 5 X=160.69 251-265 17 236-250 28 221-235 33 206-220 38 191-205 67 176-190 103 161-175 164 146-160 180 131-145 151 116-130 144 101-115 66 86-100 15

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A temperature of 98.6 degrees Fahrenheit is an example of the:

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The mean should be used when reporting wages in order to avoid undue influence of extremes in salary.

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Data that are at the interval level of measurement are more precise than ratio-level data.

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Percentile ranks are a form of standard score.

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A z-score of +1 is equivalent to a T-score of 50.

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When ratio data are involved, the following measure(s) of central tendency can be used:

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In a normal distribution having a mean of 53.0 and a standard deviation of 7.0, the estimated value of the median would likely be:

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Simple regression formulas should be developed when the correlation coefficient between two sets of scores falls between −.5 and +.5.

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Group cum 20-22 3 50 17-19 5 47 14-16 10 42 11-13 14 32 8-10 11 18 5-7 6 7 2-4 1 1 -In a 100-meter run, a sprinter covered the distance in 10.5 seconds. Out of thirty sprinters, the mean time was 10.9 seconds and the standard deviation was .30 seconds. What is the equivalent z-score for this performance?

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