Skews
The best measure of central tendency for an extremely skewed distribution of scores.
What is the median?
Find the possible range:
32 97 72 84 18 65 25
What is 79?
Find the mode: 8, 9, 7, 8, 5, 4, 2, 8, 4, 7, 9, 6, 2, 2, 3, 8, 6, 9, 8, 2, 4, 6, 1, 1, 8
What is 8?
The shape of a distribution of scores where the mean is equal to the median.
What is symmetrical?
Find the possible range:
54 17 26 105 36 25 16 94
What is 89?
Find the median: 16, 9, 4, 17, 3, 8, 11, 7, 19, 15, 6, 10, 14
What is 10?
n = 8. ΣX = 24. n = 16. ΣX = 28. Give the weighted mean.
Defend your answer!
For a POSITIVELY skewed distribution: the most probably order for the three measures of central tendency from smallest to largest.
What is mode, median, mean?
Find the mean: 106, 36, 72, 118, 95, 86, 45, 54
The most likely value for a mean with a positively skewed distribution, a mode of X = 20, and a median of X = 25?
What is 25 or greater?
Find the mean, degrees of freedom, variance, and standard deviation. 1, 1, 4, 6
Mean = 3 Degrees of freedom = 3. Variance = 4.5 Standard deviation = 2.121
A sample of n = 8 scores has a mean of M = 20. Calculate the value of ΣX for this sample.
What is 160?
Find the median: 4, 5, 6, 6, 6, 8.
What is 6.833?
12, 10, 9, 14, 10. Calculate the mean, variance, and standard deviation.
Mean = 11. Variation = 3.2. Standard deviation = 1.789
Find the median: 7, 8, 8, 9, 9, 9, 10, 10, 11, 11
What is 9.1667?