Measures of Variability 1. The following data gives the number of social interactions of longer than 10 minutesin one week for a group of college students. (7 points)77 12 17222732374247Compute the range, variance, and standard deviation.2. Two seemingly equally excellent students are vying for an academic honor whereonly one must have to be chosen to get the award. The following are their grades usedas basis for the award: (8 points)Kathlyn : 91, 90, 94. 93, 92Renier : 92, 92, 90, 94, 92Whom do you think deserves the award? Explain

As per Policy I have calculated first main question only

Answered: 1. The following data gives the number…

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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Variables Mean SD Honesty Profanity self report Profanity used Honesty 7.63 3.00 (0.79) Profanity self report 6.51 2.56 0.34*** (0.84) Profanity used 4.09 2.61 0.20** 0.46*** (-) Profanity liked 1.60 1.62 0.13** 0.41*** 0.45*** * p < .05. ** p < .01 *** p < .001. Based on the results of this table, is there evidence to reject the null hypothesis that there is no correlation between using profanity, as assessed by any of the three profanity measures, and honesty? a. Yes, because all 3 correlations between honesty and the measures of profanity have asteriks that…
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divide a data set into four equal parts, whereas divide it into one hundred equal parts. Quartiles percentiles Percentiles quartiles Measures of variation measures of central tendency Fences Z-Scores
draw/graph how random error sampling due to variation in observation and systematic bias/error can be altered by sample size with sample size being on the horizontal axis and error being on the Y. (plot a line for each reflecting how they relate)
In multiple regression analysis, the mean square regression divided by mean square error yields the ___________ a. Standard error B. F statistic c. R square d. t statistic
eat out or in The overall change in the consumer price index is a weighted average of changes in various categories. on november 19, 2011 the boston globe reported the data displayed in figure 5.7. the change in the CPI for food is a weighted average of the change in the cost of food at home and the change in the cost of food away from home. find the weights.
Quiz vs Lecture Pulse Rates Do you think your pulse rate is higher when you are taking a quiz than when you are sitting in a lecture? The data in Table 1 show pulse rates collected from 10 students in a class lecture and then from the same students during a quiz. The data are stored in QuizPulse10. Std. Student 1 2 4 6 7 8. 9. 10 Мean Dev. Quiz 75 52 52 80 56 90 76 71 70 66 68.8 12.5 Lecture 73 53 47 88 55 70 61 75 61 78 66.1 12.8 Table 1 Quiz and lecture pulse rates for 10 students Construct a 95% confidence interval for the difference in mean pulse rate between students taking a quiz and sitting in a class lecture. Click here for the dataset associated with this question. Round your answers to one decimal place. The 95% confidence interval is i to i
IQ tests supposedly measure our intelligence. They typically are ‘normed’ so that they have a mean of 100 and a standard deviation of 15. (Higher scores show higher intelligence.) Use the graph and use the z-score and percents from columns b and c in Table A, when relevant. If you scored 132, what is your z-score? (Interpret.) Use table A X, z(a), (b), and (c) X z (a) (b) (c) and use the graph! Write down or save your response to use in Part 2 of this quiz. Group of answer choices -2.53 z. I'm at the 98.34 percentile rank and 1.66% of people scored smarter than me. 2.13 z. I'm at the 98.34 percentile rank and 1.66% of people scored smarter than me. -2.13 z. I'm at the 1.66 percentile rank and 98.34% of people scored smarter than me. 2.53 z. I'm at the 0.57 percentile rank and 99.43% of people scored smarter than me. 2.13 z. I'm at the 1.66 percentile rank and 98.34% of people scored smarter than me. 2.53 z. I'm at the 99.43 percentile rank…
Using a real life example: show and describe a bell-shaped data distribution or data that is normally distributed with a detailed diagram

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1. The following data gives the number of social interactions of longer than 10 minutes in one week for a group of college students. (7 points) 2 7 12 17 22 27 32 37 42 47 Compute the range, variance, and standard deviation.