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A sample of n = 6 has a mean of M = 32. What is EX?...

  1. A sample of n = 6 has a mean of M = 32. What is EX?

E for sigma

  1. Find the mean for the following frequency distribution:

X

f

10

1

9

2

8

4

7

3

6

2
  1. For the following scores, find the following:
    1. Mean
    2. Median
    3. Mode
    4. Based on the three values for central tendency, what is the most likely shape for this distribution of scores (symmetrical, positively skewed, or negatively skewed)?

26        40        21        17        48        31        37            22

24        13        30        28        29        19        44            34

35        20        7          42        39        31        40            11

  1. What is the range for the set of scores in #3 above?

  1. Given the following set of scores, find the variance and standard deviation: 5, 2, 8.

  1. Calculate the following for this set of scores: 2, 10, 1, 3, 4.
    1. SS
    2. Variance and standard deviation, if this set of scores represents the entire population
    3. Variance and standard deviation, if this set of scores represents a sample of the entire population

  1. Find the degrees of freedom (df) for the following samples:
    1. 15, 14, 9, 10, 11, 13
    2. 3, 5, 8, 14

math   Statistics-And-Probability   
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