As the lead researcher in a study examining the relationship between exercise and anxiety scores, you receive the following exercise minutes per week from your participants: 120 135 117 90 108 82 111 148 73 67 101 108 134 127 96 89 106 122 125 99 In terms of differences in exercise time, calculate and interpret these data using the following: (a) range (b) variance (c) standard deviation.

As the lead researcher in a study examining the relationship between exercise and anxiety scores, you receive the following exercise minutes per week from your participants: 120 135 117 90 108 82 111 148 73 67 101 108 134 127 96 89 106 122 125 99 In terms of differences in exercise time, calculate and interpret these data using the following: (a) range (b) variance (c) standard deviation.

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Find the variance and standard deviation of the data below: Classes 1-10 11 - 20 21-30 31-40 41 - 50 51 - 60 61 - 70 71-80 81-90 Frequency 3 6 5 3 10 7 6 5 5
(b) Calculate the mean, median mode and standard deviation for the following data: 4600- 4800 75 4800- 5000 5000- 5200 5200- 5400 50 4000- 4400- Class size 4200 22 4200- 4400 38 4600 Freque 65 80 70
These data are the number of on-campus burglaries reported in a given year for nine western Pennsylvania universities. 16 10 4 16 9 8 12 5 16 For the above data set, find the mean, median, midrange, and mode. Round to one decimal place, if necessary.
Data on grades of students who did and did not attend class regularly. What are the mean and median scores of those two groups of students? What do they suggest about the value of attending class? Attended class 241 243 246 249 250 252 254 254 255 256 261 262 263 264 264 264 265 267 267 270 271 272 273 276 276 277 278 278 280 281 282 284 288 288 290 291 291 292 293 294 296 296 297 298 310 320 321 328 Skipped class 188 195 195 225 228 232 233 237 239 240 250 256 256 256 261 264 264 268 270 270…
Calculate the mean deviation (from mean) from the following data : Marks : 0-10 10-20 20-30 30-40 40-50 50-60 60-70 No. of Students : 5 8 15 7 3
Varatta Enterprises sells industrial plumbing valves. The following table lists the annual sales amounts for every salesperson in the organization for the most recent fiscal year. Salesperson Sales Amount ($1000) Salesperson Sales Amount ($1000) Joseph 466 Jennifer 409 Stanley meani Luke Lexie Margaret variance standard deviation 146 $ 231 546 329 294 193 369 Wei Samantha Erin Dominic Charlie Amol Lenisa 297 320 189 (a) Compute the mean (in 5), variance, and standard deviation (in $) for these annual sales values. (Round your answers to the nearest whole number.) $ 315 X 315,071 210 412 (b) In the previous fiscal year, the average annual sales amount was $300,000 with a standard deviation of $95,000. Discuss any differences you observe between the annual sales amount in most recent and previous fiscal years. The mean sales amount has select from the previous to most recent fiscal year. The amount of change is Therefore, there is a strong likelihood that Seact compared to the standard…
The following table summarizes the grade point averages (GPAs) of graduatestudents in a statistics class. Approximate the mean GPA of the class.
The table below shows the age distribution of a sample of 150 students at UCC. Find an estimate of the variance and standard deviation. Age 25-34 35-44 45-54 55-64 Number 33 39 48 30
Two companies produce widgets of varying quality. An important measure of quality is the number of days the widgets can go before they need to be replaced. Do the following data provide evidence that the quality of widgets from the two companies differ? Round the p-value to three decimal places. Do not assume equal variances. Widget Life in Days from Company 1 Widget Life in Days from Company 2 12.0 52.2 14.0 45.8 48.4 44.6 47.0 57.5 50.4 44.2 57.4 50.8 30.8 43.0 30.0
2. Find out (i) Mean (ii) Median and (iii) Standard Deviation for the following data. Class 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 Interval Frequency 15 18 22 28 32 26 25 17
Find the va'ue of mean , mode and median from the data given helow: Weight (in kg.) No. of students 93 -97 98 -102 103–107 108-112 113-117 118 --122 123 127 128- 132 3 5 12 17 14 3
What is the variance for the following set of scores: 2, 2, 2, 2, 2. A. 0 B. 2 C. 4 D. 25