Explore BrainMass

Quantative Analysis of Data

Calcuate the range, variance & standard deviation for this data series

Universal package service,ltd., delivers sm parcels to business addresses in the greater boston area. to learn more about data description on the # of deliveries/wk for a sample of 10 customers: 3 3 4 2 3 3 23 3 Calcuate the range, variance & standard deviation for this data series. which measure does the best job of describin

Psychology Statistics 240

Jamie collects the following income data (in thousands of dollars) for some of his street neighbors: 19, 21, 22, 17, 23, 19, 22, 24, 18, 21, 26, 20, 23, 23, 20, 21, 25, 20 Given that he cannot reach all his neighbors, he wants to estimate what is the average income of the whole neighborhood using just the data that he collect.

Psychology Statistics 240

The numbers of hours a week that a group of boys watch TV are: 2, 4, 6, 7, 3, 8, 5, 7, 8, 3, 7, 4 The number of hours a week that a group of girls watch TV are: 5, 7, 9, 2, 1, 0, 4, 7, 6, 5, 6, 8 Can we say that one of the two groups watches significantly more TV than the other group?

Studying For Clep

[1] Find the mean, median, and mode of the weights of bears given in Data Set 3 (this data set may be found in the back of your text). [2] Find the standard deviation of the weights of bears given in Data Set 3. See attached [3] Based on this data, at what weight would a bear be considered unusually heavy? How many of the

Standard Deviation of achievement tests

The standard deviation of test scores on a certain achievement test is . A random sample of scores on this test had a mean of . Based on this sample, find a confidence interval for the true mean of all scores. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your a

Assist With problem set

The following data represents the number of automobiles arriving at a toll booth during 20 intervals, each of ten-minute duration. Compute the mean, median, mode, first quartile, and third quartile for data... (please see attachment for remainder of questions)

Stats problem using basic excel and statpro

I have attached my original problem in word format and my answers in excel format. Could the OTA please check my work and offer suggestions where mistakes are obvious as this is the premise for me to build on in my coursework. Also, I am looking for detailed help in understanding what this data means/implies. For example, how


Included is data from cities describing the Median Education ("Education") or the Percentage of White collar workers. Divide all the cities listed into two groups: ones with median education above 11 and ones with median education below 11. Use a resampling technique to determine whether the percentage of white collar workers is

Expected value

Consider the experiment of throwing an ideal die three times(all outcomes are equally likely). Let X and M denote the mean and the median respectively, of the three scores obtained. a) find E(X)

Descriptive Statistics

ALL VARIABLE NAMES ARE REFERENCES TO THE VARIABLES OF THE DATA. SELECT THE SAMPLES FROM THE POPULATION. ( Population of 1 through 74, which is in the EXCEL FILE attachment.) (1) Using the size of the group as the sample size, select 10 different random samples of the same size. To do this, number each person in the populatio


Find the mean of the set of numbers 63,65,67,68,69,70,71,72,74,75

Help with interpreting the results is given.

Shortly after their graduation, John and Mary bought two used vehicles. To satisfy their curiousity, they started to record their kilometrage each time they filled their gas tanks. After ten weeks, their records show the following numbers of kilometres per litre. Mary: 17, 19, 16, 15, 18, 18, 20, 22, 15, 15 Mean= 17.5 Stan

Test value

A liberal arts college has a mean grade point average of 2.45 with a standard deviation of .69. The dean of the psychology department believes that his students have a higher grade point average than the mean of the college. Find the test value. a. 2.502 b. 1.296 c. 1.968 d. 3.194

E-value(expectation) and standard deviation of a distribution

Billy is collecting bottle caps from his favorite brand of soda pop. The company that produces it runs a contest: each bottle cap shows a picture of one of the 50 states of the United States, with each state equally likely. If you collect all 50 states, then you win a cash prize. 1. Find the e-value of your distribution of th

Quantitative Analysis and Game Theory

Quantitative Analysis (Show All Work) #1 Solve the following Game: Y1 Y2 X1 -5 -10 X2 12 8 X3 4 12 X4 -40 -5 #2 For the following two-person, zero-sum game, are t

Analyze data set for statistically significant change.

The specific questions I need help with are part of statistics homework. My progress so far is in an excel spreadsheet. The source data is labeled "case data", and the different responses are in different worksheets. Here are the questions: Produce a histogram for each data set. (DONE) Compute descriptive statistics (

Measure of central tendency

Here is Appendix N. I need to calculate the three measure of central tendency. Also, develop a five and seven class frequency distribution table for the data. Please show steps so that I can follow it to compare my solution.


1) A test has the following properties: mean = 100, S.D. = 15, and r = .74. An individual has obtained a score of 85 on this test. Compute his or her SEM (standard error of measurement) and determine the scores that would be needed to develop a 95% confidence interval for this specific individual. 2) For the data listed be


MULTIPLE CHOICE QUESTIONS In the following multiple choice questions, circle the correct answer. 1. A numerical value used as a summary measure for a sample, such as sample mean, is known as a a. population parameter b. sample parameter c. sample statistic d. population mean e. None of the above answers is cor

Statistics help: Random Sample

A random sample of 15 women yielded a mean pulse rate of 74.5 beats/minute with a standard deviation of 9.6. A random sample of 12 men yielded a mean pulse rate of 76.0 beats/minute with a standard deviation of 8.7. Test the claim that pulse rates for men and women are the same. Use V = 0.01. Use the traditional methods f


A. What is the implied population? b. What is the sample? 2. Draw a bar chart/graph for the following data 3. Find the mean, median, mode and standard deviation of the data from problem 2. 4. Find the probabilities for the random variable x 5. Find the mean, mode and standard deviation for the data in proble

Chebyshev's theorem - standard deviation

A scientific calculator operates on the average 5.3 hour before needing a recharge. According to Chebyshev's theorem, if the operating times have a standard deviation of 0.6 hour. A. Between what 2 values will at least 75% of the operating times fall? B. At least what percentage of the operating times will fall in the interval

Determining probability using mean and standard deviation.

A food processing company packages a product that is periodically inspected by the Food and Drug Administration. The FDA has ruled that the company's product may have no more than 2.00 grams of a certain toxic substance in it. Past records of the company show that packages of this product have a mean weight of toxic substance eq

Find the mean and standard deviation of X:

The random variable X is the number of houses per month sold by a realtor. The probability distribution is given below. Find the mean and standard deviation of X: X (houses sold) / f(x) ____________________________________________ (0 , 0.24) (1 , 0.01) (2 , 0.12) (3