Homework Answers
( 1 )
| data | data-mean | (data - mean)2 |
| 4 | 0.625 | 0.390625 |
| 0 | -3.375 | 11.390625 |
| 7 | 3.625 | 13.140625 |
| 1 | -2.375 | 5.640625 |
| 3 | -0.375 | 0.140625 |
| 5 | 1.625 | 2.640625 |
| 5 | 1.625 | 2.640625 |
| 2 | -1.375 | 1.890625 |
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Points: 15 Psych 381 Homework #2 Calculate the Sum of Squares (SS), Variance, and Standard Deviation...
2. Samples of the age in years of student cars and faculty/staff cars: Student: 10,4, 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? 3. The data below reflect movie viewers' recall of products/brands shown within either humorous or dramatic movies. Calculate the range, variance, and standard deviation of...
Calculate SS, variance, and standard deviation for the following population of N = 8 scores: 1,...
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.)
Consider a family of four people, aged 8, 10, 33, and 37 as a population a) Calculate the population variance and standard deviation for the ages. Show your work step by step b) Random samples of siz...
Consider a family of four people, aged 8, 10, 33, and 37 as a population a) Calculate the population variance and standard deviation for the ages. Show your work step by step b) Random samples of size two are drawn with replacement from this population and their ages are recorded Find the variance and standard deviation for each sample (using the formula that involves divisions by n-1) and fill in the 3rd and 4th columns of the table Find the...
1) Calculate the variance and standard deviation for each sample. (4 points) Note: you can use...
1) Calculate the variance and standard deviation for each sample. (4 points) Note: you can use the Definitional Formulas (Slides #10 and 12) to compute sa and s, or you can choose the Computational Formulas (Slide #13). Either way is fine because the computational formula is just another form of the definitional formula, as discussed in the video. 2) In relation to the size of the mean values from two samples, what do the different standard deviations between the two...
Calculate the range, variance, and standard deviation of the following data set: 5, 5, 6, 6, 6, 8, 8, 8, 8, 10, 10, 11, 12, 12, 20 (Points: 5) Range = 15; Variance = 225; Standard Deviation = 7.5 Range = 3.85; Variance = 14; Standard D
20. Calculate the range, variance, and standard deviation of the following data set:5, 5, 6, 6, 6, 8, 8, 8, 8, 10, 10, 11, 12, 12, 20(Points: 5) Range = 15; Variance = 225; Standard Deviation = 7.5 Range = 3.85; Variance = 14; Standard Deviation = 3.74 Range = 20; Variance = 15; Standard Deviation = 4 Range = 15; Variance = 14.82; Standard Deviation = 3.85
Calculate the variance and standard deviation for the following sample of scores: 7, 2, 4, 6,...
Calculate the variance and standard deviation for the following sample of scores: 7, 2, 4, 6, 4, 7, 3, 7 2 Enter an exact number. Need Help Read It Viewing Saved Work Revert to Last Response Submit Answer Save Progress << View Previous Question Question 15 of 22 Home My Assignments Extension P 其i 0 Type here to search F3 F1 F2 0 0 C@
Calculate the range, variance, and standard deviation for the following samples. a. 4, 2, 3, 0,...
Calculate the range, variance, and standard deviation for the following samples. a. 4, 2, 3, 0, 3 O b. 1, 5, 7, 7, 2, 0, 2 0 c. 4, -5, 1, 7, 8, 2 , 2, 1, 7 d. 0, 2, 0, 0, - 1, 1, - 2, 1, 0, - 1, 1, - 1, 0, - 3, -2, -1, 0, 1 D a. The range is 4. (Type an integer or a decimal. Do not round.) The variance is...
QUESTION 3 9.3: Inferences about variance and standard deviation. Calculate the value of the test statistic,...
QUESTION 3 9.3: Inferences about variance and standard deviation. Calculate the value of the test statistic, x? *for the given situation. 27 , n = 10 , s2 = 28.4 Enter your answer to two decimal places. QUESTION 4 Given the test statistic and degrees of freedom, find the p-value range (area to the right) that is the best choice. x? = 34.7, df = 21 0.75 <P<0.90 0.025 <P<0.05 0.90 < P<0.95 0.05 <P<0.10
4- Variance and Standard deviation (how far the data values lie from the mean) The mean,...
4- Variance and Standard deviation (how far the data values lie from the mean) The mean, mode, and median do a nice job in telling where the center of the data set is, but often we are interested in more. For example, a pharmaceutical engineer develops a new drug that regulates iron in the blood. Suppose she finds out that the average sugar content after taking the medication is the optimal level. This does not mean that the drug is...
3. Consider the following. n = 5 measurements: 3, 3, 1, 2, 5 Calculate the sample variance, s2, using the definition formula.
3. Consider the following. n = 5 measurements: 3, 3, 1, 2, 5 Calculate the sample variance, s2, using the definition formula. Calculate the sample variance, s2 using the computing formula. Calculate the sample standard deviation, s. (Round your answer to three decimal places.)4. A distribution of measurements is relatively mound-shaped with a mean of 60 and a standard deviation of 13. Use this information to find the proportion of measurements in the given interval. between 47 and 73 5. A distribution of...
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? 3. The data below reflect movie viewers' recall of products/brands shown within either humorous or dramatic movies. Calculate the range, variance, and standard deviation of...
Consider a family of four people, aged 8, 10, 33, and 37 as a population a) Calculate the population variance and standard deviation for the ages. Show your work step by step b) Random samples of size two are drawn with replacement from this population and their ages are recorded Find the variance and standard deviation for each sample (using the formula that involves divisions by n-1) and fill in the 3rd and 4th columns of the table Find the...
1) Calculate the variance and standard deviation for each sample. (4 points) Note: you can use the Definitional Formulas (Slides #10 and 12) to compute sa and s, or you can choose the Computational Formulas (Slide #13). Either way is fine because the computational formula is just another form of the definitional formula, as discussed in the video. 2) In relation to the size of the mean values from two samples, what do the different standard deviations between the two...
Calculate the variance and standard deviation for the following sample of scores: 7, 2, 4, 6, 4, 7, 3, 7 2 Enter an exact number. Need Help Read It Viewing Saved Work Revert to Last Response Submit Answer Save Progress << View Previous Question Question 15 of 22 Home My Assignments Extension P 其i 0 Type here to search F3 F1 F2 0 0 C@
Calculate the range, variance, and standard deviation for the following samples. a. 4, 2, 3, 0, 3 O b. 1, 5, 7, 7, 2, 0, 2 0 c. 4, -5, 1, 7, 8, 2 , 2, 1, 7 d. 0, 2, 0, 0, - 1, 1, - 2, 1, 0, - 1, 1, - 1, 0, - 3, -2, -1, 0, 1 D a. The range is 4. (Type an integer or a decimal. Do not round.) The variance is...
QUESTION 3 9.3: Inferences about variance and standard deviation. Calculate the value of the test statistic, x? *for the given situation. 27 , n = 10 , s2 = 28.4 Enter your answer to two decimal places. QUESTION 4 Given the test statistic and degrees of freedom, find the p-value range (area to the right) that is the best choice. x? = 34.7, df = 21 0.75 <P<0.90 0.025 <P<0.05 0.90 < P<0.95 0.05 <P<0.10
4- Variance and Standard deviation (how far the data values lie from the mean) The mean, mode, and median do a nice job in telling where the center of the data set is, but often we are interested in more. For example, a pharmaceutical engineer develops a new drug that regulates iron in the blood. Suppose she finds out that the average sugar content after taking the medication is the optimal level. This does not mean that the drug is...
3. Consider the following. n = 5 measurements: 3, 3, 1, 2, 5 Calculate the sample variance, s2, using the definition formula. Calculate the sample variance, s2 using the computing formula. Calculate the sample standard deviation, s. (Round your answer to three decimal places.)4. A distribution of measurements is relatively mound-shaped with a mean of 60 and a standard deviation of 13. Use this information to find the proportion of measurements in the given interval. between 47 and 73 5. A distribution of...
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