3. A student obtained the following scores in twelve 100-item assignments:9391 9086869497 90 98859597a. What is the standard deviation?b. What is the Mean Absolute Deviation?c. Based on the descriptive measures you obtained in item 1 and in this item what can yousay about his scores in the assignment?

Standard deviation (σ) is defined as the square root of the variance. It measures the variability…

Answered: 3. A student obtained the following…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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At St. Therese College, the 200 freshmen enrolled in Psych Stat took a final exam on which their mean score was 72 and their standard deviation was 6. The table below presents the grades of 10 students. Convert each into a Z score and determine the number of people who scored higher or lower than each of the 10 students. (HINT: Multiply the appropriate proportion by N and round the result.) 60 57 55 67 70 72 78 82 90 95
The following data set represents performance scores from a sample of participants in a psychology experiment. What is the standard deviation of the data set below? Enter your answer in number. If you have decimals, round to the closest whole number. Score: 67, 87, 96, 59, 70, 83, 92, 78, 84, 79, 85
Answer it using spreadsheet or excel
What is the mean absolute deviation of the following scores: * Test Scores Stems Leaves 86.5 86 7.01 5.2 7 8 9 149 59 3 46 68 Other:
During a weight loss study, each of eight subjects were given a diet for 4 months. Use the table, which shows the weight for the ten subjects before and after having the diet for 4 months, to answer the following questions. Refer to chart below. What is the standard error of the mean difference? What is the standardized test statistic ts? pound 1 2 3 4 5 6 7 8 Mean SD Weight after 4 months 168 177 196 180 229 144 197 252 192.88 34.34 Original weight 185 194 213 198 244 162 211 273 210 34.77 Difference -17 -17 -17 -18 -15 -18 -14 -21 -17.13 2.10
Refer to the accompanying table, which describes the number of adults in groups of five who reported sleepwalking. Find the mean and standard deviation for the numbers of sleepwalkers in groups of five. A. The mean issleepwalker(s). (Round to one decimal place as needed.) B. The standard deviation issleepwalker(s). (Round to one decimal place as needed.)
Assistance with the following. Show working for guidance thank you.
Using your calculator, find the range and standard deviation, round to two decimals places:The table below gives the number of hours spent watching TV last week by a sample of 24 children. 75 84 49 32 59 48 69 81 34 67 78 50 46 48 83 32 29 54 21 83 47 58 91 15 a) Range = b) Standard Deviation =
Answer the letter E only. Thank you!
Find the mean,' mode, standard deviation and co-effi- cient of skewness for the following : Years under 10 20 30 40 50 60 : No. of persons 109 15 32 51 78 97 :
For the following data: X-11.2.2. 3,3, 3, 4,4, 4,4, 5. 5. 5, 6,6, 6, 7, 7. 8 91 Find: A) Arithmetic mean, mode, median, and standard deviation. B) plot the histogram or ogive
2.5

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