1. (2 points) For the following population N=5, calculate mean, standard deviation, and 7-scores for each...
Compute the mean and standard deviation for the following sample of n = 4 scores: 82, 88, 82, 86 (Hint: To simplify the arithmetic, you can subtract 80 points from each score to obtain a new sample consisting of 2, 8, 2, and 6.) Compute the mean and standard deviation for the new sample. Mean: Standard deviation: What are the values of the mean and standard deviation for the original sample? Mean: Standard deviation:
1. A student was asked to compute the mean and standard deviation for the following sample of n= 5 scores: 81, 87, 89, 86, and 87. To simplify the arithmetic, the student first subtracted 80 points from each score to obtain a new sample consisting of 1,7,9,6, and 7. The mean and standard deviation for the new sample are then calculated to be M=6 and s = 3. What are the values of the mean and standard deviation for the...
Calculate SS, variance, and standard deviation for the following population of N = 8 scores: 1, 3, 1, 10, 1, 0, 1, 3 (Note: The computational formula works well with these scores.)
Calculate the standard deviation for the following sample of n 5 scores. 2 3 1 5 4 If it is a decimal number, leave two numbers after the decimal point and do not round. Standard Deviation-
A population of scores has a standard deviation of 5. In this population a raw score of 45 corresponds to a z score of 1.5. What is the population mean?
IQ-scores are standard-score transformed scores having a mean of 100 and a standard deviation of 15; SAT scores are standard-score transformed scores having a mean of 500 and a standard deviation of 100. In what follows, X refers to a raw score from a distribution with a mean of X and a standard deviation of S, and SAT and IQ refer to the corresponding transform of that score. Solve for the missing value in each of the following: (a) X=-2.5;Xmean=...
3. A normal distribution of BMCC MATSI scores has a standard deviation of 1.5. Find the z-scores corresponding to each of the following values: a. A score that is 3 points above the mean. b. A score that is 1.5 points below the mean. c. A score that is 2.25 points above the mean 4. Scores on BMCC fall 2017 MATI50.5 department final exam form a normal distribution with a mean of 70 and a standard deviation of 8. What...
Points: 15 Psych 381 Homework #2 Calculate the Sum of Squares (SS), Variance, and Standard Deviation for the following population: 4, 0, 7, 1, 3, 5,5,2 2. Samples of the age in years of student cars and faculty/staff cars: Student: 10,4, 5, 2,9,7, 8,8, 7, 13, 12, n 11 Faculty: 5, 10, 4, 13, 2, 3, 2,7,6, 6, 3, 4, n 12 Calculate the mean, median, and mode for each group. Do either of these distributions appear to be skewed?...
2 Applications of the Normal Distribution part 2 Calculate the Mean and Standard Deviation of a Normal Distribution Question Emma was told that her math test score was I standard deviation above the mean. If test scores were approximately normal with 77 and σ 8, what was Emma's score? not include units in your answer. For example, if you found that the score was 77 points, you would enter 77 Provide your answer below FEEDBACK MORE INSTRUCTION 5 6
question 4 1. A distribution has a standard deviation of a = 12 points. Find the 2-score for each of the following locations in a distribution by sketching a distribution (do not use an equation). (4 points) a. Above the mean by 4 points b. Below the mean by 6 points c. Below the mean by 18 points 2. A distribution has a standard deviation of a = 5 and u = 30. Find the score for each of the...