6. A statistic that measures the distance between two extreme scores of acontinuous variable is thea.range.b. skew.average deviation.variance.С.d.

Answered: 6. A statistic that measures the…

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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The ? of a distribution of scores for a ? is measured by the variability. a- mode; symmetry b- variance; variability c- mean; modality d- standard deviation; variability
Use table for questions 1a, b,c, Number of hours spent sleeping at night 5 8 6 7 4 9 8 7 5 9 8 10 7 7 8 6 8 8 7 8 9 8 7 5 9 10 7 8 8 6 1a. Find the measurer of central tendency for the data. Mean: Median: Mode: 1b. Which measure of central tendency so you think gives the best indication of the number of hours the “typical” person spends sleeping each night? Explain 1c. Suppose anotherperson was surveyed who said that he spends 3 hours sleeping at night. How would this affect the mean, median and mode? 2A. Use the given data set to solve the following problems 100, 129,105,97,112,103,241,110,117,18. Find the a) mean b) median c) mode B) What effect dose removing the outlier have on each measure of central tendency? a) mean b) Mode c) Median 3. Gray has taken an aptitude test 8 times and his scores are 96,98,105,36,87,95, and 93. Which measure of central tendency is most appropriate for his score?
Which of the following are measures on positions of a data set? the maximum the standard deviation the third quartile a standard score the median
Q2. A telemarketing firm is monitoring the performance of its employees based on the number of sales per hour. One employee had the following sales for the last 20 hours (each entry in the table is the number of sales per hour) 5 4 2 6 7 8 5 4 6 4 4 5 4 5 4 7 8 What are the mean, median, mode, variance and standard deviation of the sales?
Use the Student Unit Load data. Student Unit Load 3, 12, 6, 9, 6, 12, 15, 12, 7, 9, 3 Find the mean, median, mode, range, standard deviation and variance. Use the range rule-of-thumb to find significantly high and low scores. Write the 5-number summary. Find the z-score for x = 15 Is x = 15 unusual in terms of a z-score?
3. The data in the table shows the mileage that students commute to school. B. Find the weighted mean. Miles Midpoint Frequency 10 - 14 12 8 15 - 19 17 C. Draw a histogram for the data. 20 - 24 22 9 25 - 29 27 21 30 - 34 32 7 A. How many students are in the class?
Which one?
PLS. Solve Quickly Applications Problems According to a Sallie Mae survey and credit bureau data, in 2008, college students carried an average of $3173 debt on their credit cards (USA TODAY, April 13, 2009). Suppose that cur- rent credit card debts for all college students have a normal distribution with a mean of $3173 and a standard deviation of $800. Find the probability that credit card debt for a randomly se- lected college student is between $2109 and $3605.
The scores of the Betropolis University Music Appreciation Exam are Normally Distributed with a mean of 50 and a standard deviation of 10; that is N(50, 10). A. Boris scored 40.6 and Bela scored 56.8. Find the percent of students who scored greater than Boris and less than Bela. Your answer should be correct to 4 places after the decimal point. ___________ B. 51% of the students score greater than Bernie. Find Bernie’s score. Your answer should be correct to 3 places after the decimal point. Bernie’s score was ___________
Which of these is an advantage of using a transformed score when reporting the score of an individual case? a. Transformed scores will allow the mean score to be reported. b. Transformed scores will be reported on the nominal level. c. Transformed scores provide a context for the individual's score d. Transformed scores provide a measure of variability.
18
Refer back to the histogram from question #4. Compute the mean number of shipping days Compute the median number of shipping days Write the 5-number summary for this data. Create box plot.

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6. A statistic that measures the distance between two extreme scores of a continuous variable is the a. range. b. skew. c. average deviation. variance. d.