Find the MEAN for the Following Data دار|مدح Find the ss for the following Data པ༠...
Find the mean, median, mode, population standard deviation and variance of the given data: Items 3 5 6 9 10 12 15 Frequency 1 4 2 12 5 4 2 Mean=9.03 Median= 9 Mode 9 Population standard= 4 Variance= 16 Mean=9,03 Median= 9 Mode- 9 Population standard deviation=5 Variance= 25 Mean=9.03 Median= 9 Mode= 9 Population standard deviation= 6 Variance= 36 Mean=9.03 Median= 9 Mode= 9 Population standard deviation=2.8 Variance= 7.7
A population of N = 10 scores has a mean of μ = 24 with SS = 160, a variance of σ2 = 16, and a standard deviation of σ = 4. For this population, what is Σ(X − μ)? A. 0. B. 4. C. 16. D. 160
To find it's Z-score, the sample data must be shifted by subtracting the mean of the population and then rescaled by dividing by the standard deviation of the population. True False
Consider a data set containing the following values: 67, 94, 82, 80, 97, 99, 78, 91. The mean of the given value is 86. The squares of the scores are calculated as follows: 4,489, 8,836, 6,724, 6,400, 9,409, 9,801, 6,084, 8,281. If the preceding scores are sample data, the sum of squares are? If the preceding scores are population data, the SS is? If preceding scores in a sample data, the simple standard deviation is? and the sample variance is?...
For the population 0.5 2.1 4.4 1.0 compute each of the following. a. The population mean μ. b. The population variance σ^2. c. The population standard deviation σ. d. The z-score for every value in the population data set.
For the following data: a. Calculate the sample mean and sample variance b. Calculate the probability that the population mean is between 9 and 10 if the population standard deviation is known to be 1.5. c. What is the 98% confidence interval for the population mean if the population standard deviation is known to be 1.5? d. Calculate the 98% confidence interval using the sample standard deviation. 1 2 3 4 3 6 6.6 7.1 7.8 4.7 8.5 5.4
Question 4 0.5 pts A data set has a mean of 44. In this data set, a raw score X-40 corresponds to the standardized score z-1. What is the standard deviation for this data set? Hint:take advantage of the formula for Z-score Question 5 0.5 pts A data set has a standard deviation of 2.5. In this data set, a raw score X-30 corresponds to the standardized score z = 1.30. What is the mean of this data set? Hint:take...
Question 3: Consider the Standard Normal Distribution with mean 0 and standard deviation 1. Find the following. a) P (z>0.5) b) P(z 1.5) c) P (-0.49 < z1.5) Question 4: If you have a normal distribution with mean 14 and standard deviation of 2. What is P(x >16)? Question 5 Professor Hardy assumes the exam scores are normally distributed and wants to grade "on a curve." The mean score was 68, with a standard deviation of 9, If he wants...
sample mean, sample s, variance, population s This data is from a sample. Calculate the mean, standard deviation, and variance. x 42.6 23.9 12.9 22.8 41.3 26.1 | 13.6 14.4 44.3 Please show the following answers to 2 decimal places. Sample Mean = 26.88 Sample Standard Deviation = Sample Variance = (Please use the standard deviation above for your calcul Ooops - now you discover that the data was actually from a population! So now you must population standard deviation....
eientar or Correlationar For the following set of scores (9, 2, 3, 5), find the value of each expression: 1.4 A population has a mean of u 50 and a standard deviation of a 10. For this population, find the z-score corresponding to each of the following scores. Plot each point on a graph. eientar or Correlationar For the following set of scores (9, 2, 3, 5), find the value of each expression: 1.4 A population has a mean of...