4. The following are the number of hours travelled by a senior high school student to go to school everyday:.5.251.41.5.85.201.51.75.10.65.75211.101.651.4.6.35.40.25a.What is the mean number of hours spent by the students? variance? standard deviation?

Given that XX X^2X2 .5 0.25 .25 0.0625 1.4 1.96 1.5 2.25 .85 0.7225 .20 0.04 1.5…

Answered: 4. The following are the number of…

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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6. A. 1. Illustrate the mean or expected value. 2. Illustrate the variance and standard deviation. II III 3 4 5. 6 7 8 10 11 12 13 14
K A commuter tallied the time to work for 200 days and found that it resembled a normal curve. The mean time was 50 minutes, and the standard deviation was 2 minutes. For the 200-work-day experiment, find the percent of time commuting to work less than 44 minutes. 44 Minutes to Commute to Office 1 46 48 68%- 95% 99/7% 50
•.• $6.10 A process that is considered to be in control measures an ingredient in ounces. Below are the last 10 samples (each of size n = 5) taken. The population standard deviation is 1.36. Samples 7. 3 4 5 8 910 13 10 10 10 13 8. 10 12 10 9. 10 9 10. 11 10 8. 12: 10 10. 6: 10 11 11: 10 8. 12 8. 69. 11 10. 10 11 12 8. 10 12 12 10 10 10 8. 12 a) What is the process standard deviation o? What is oz? b) If z = 3, what are the control limits for the mean chart? c) What are the control limits for the range chart? d) Is the process in control? K
7. A set of data has a variance of 81. What is the standard deviation? SAMSUNG
Use the magnitudes (Richter scale) of the 120 earthquakes listed in the accompanying data table. Use technology to find the range, variance, and standard deviation. If another value, 8.00, is added to those listed in the data set, do the measures of variation change much? 3.272.452.542.432.752.372.192.421.911.432.851.731.992.322.332.704.742.873.382.722.833.423.952.993.873.473.082.942.703.602.842.373.033.232.593.643.242.662.352.432.813.952.522.922.983.412.272.562.933.162.201.151.934.002.542.832.352.311.522.801.951.602.452.332.081.553.201.491.812.551.662.352.452.082.192.752.002.792.392.671.692.881.841.991.862.561.972.183.671.553.162.461.881.502.793.283.822.752.452.712.541.642.183.032.361.481.922.322.651.411.391.802.242.302.481.732.402.442.482.44
C.28. A car dealership records the number of cars sold each month and finds the mean =56 and the standard deviation =8.2. What does a standard deviation of 8.2 mean?
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find popuation mean and standard deviation of data 11.2,15.6,18.4,24.5,26,32.8,34.6,40
3. The following are the number of customers on a certain day in three milktea shops. Calculate the mean, mode, range, standard deviation, coefficient of variation measures. Compare its variability. milktea: 14, 15, 16, 17, 18, 19, 21 Gongcha: 22, 22, 24, 25, 28, 32, 32 Infinitea: 10, 11, 12, 12, 12, 15, 16
Question 3 The number of hours worked per week for a sample of ten students is shown below. Student Hours 1 39 28 10 16 26 34 38 9. 4 10 32 1. Determine the mean, median, and mode. 2. What is the range of the data for the hours worked? 3. What is the standard deviation for the number of hours worked? 2. 3. 4, 7, 8.
HEIGHT OF GRADE 11 STUDENTS 150.8 cm 151 сm 160 cm 153.5 cm 165.3 cm 170.2 cm 167.5 cm 158.5 cm 174.6 cm 154.5 cm 140.8 cm 164.3 cm 170.4 cm 155 cm 160 cm 141 cm 150ст 163.5 cm 163 cm 161 cm Find: a. Mean b. Median c. Mode (identify the type of mode) d. Range e. Standard Deviation f. Variance g. Average Deviation h. Skewness (identify the skewness)
Which of the following five statistics are commonly used together to determine the shape of a distribution? Five answers correct. All or nothing credit. 1. The minimum 2. Variance 3. The 2nd quartile 4. The maximum 5. Coefficient of variation 6. Interquartile range 7. The 1st quartile 8. The 3rd quartile 9. Range 10. Standard deviation

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4. The following are the number of hours travelled by a senior high school student to go to school every day: .5 .25 1.4 1.5 .85 .20 1.5 1.75 .10 .65 .75 1.10 1.65 1.4 .6 .35 .40 .25 a. What is the mean number of hours spent by the students? variance? standard deviation?