Selected sampling

September 1st, 2008


Selected sampling

Sampling the Psalms: A Scientific & Devotional Study of Selected Psalms
Author: Henry M. Morris
Paperback:  228 pages
Company: Master Books  (1996-10)
ISBN: 0890510490
List Price: $8.95
Amazon Price: $7.75
Used Price: $3.05
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Selected translations of the Russian literature on the electrogeochemical sampling technique called CHIM (Chastichnoe Izvlechennye Metallov) (SuDoc I 19.76:90-462)
Author: U.S. Geological Survey
Unknown Binding: 
Company: U.S. Dept. of the Interior, Geological Survey  (1990)
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The Colorado surface impoundment assessment: Addendum, selected site visits
Author: Michael J Liuzzi
Unknown Binding:  167 pages
Company: Colorado Dept. of Health  (1981)
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Sampling
Sampling A. Nature of Sampling. A sample is some part of a larger body specially selected to represent the whole. Sampling is the process by which this part is chosen. (more...)
Tags:   Sampling

Survey Sampling Methods
In nonprobability sampling, members are selected from the population in some nonrandom manner. These include convenience sampling, judgment sampling, quota sampling ... (more...)

Nonprobability sampling - Wikipedia, the free encyclopedia
... of getting any particular sample may be calculated. Nonprobability sampling does not meet ... or other organizations unable to require response), the sample can be self-selected rather ... (more...)

Cluster sampling - Wikipedia, the free encyclopedia
Cluster sampling is a sampling technique used when "natural" groupings are evident in a statistical population. It is often used in marketing research. (more...)

Selected Works - PoeMuseum.org
Edgar Allan Poe Museum in Richmond, Virginia. American author of The Raven, The Tell-Tale Heart, The Cask of Amontillado & more. (more...)

SAMPLING, SAMPLE PREPARATION AND DATA ANALYSIS
This is usually referred to as a laboratory sample, and ideally it will have properties which are representative of the population from which it was originally selected. Sampling ... (more...)

sampling - definition of sampling by the Free Online Dictionary ...
sam·pling   (s m pl ng) n. 1. Statistics See sample. 2. a. The act, process, or technique of selecting an appropriate sample. b. A small portion, piece, or segment selected as a ... (more...)

Afrobarometer Sampling
Within each PSU/EA, Field Teams travel to a randomly selected sampling start point (SSP). Thus the number of start points is the same as the number of PSU?s (150 or 300). (more...)

Introduction to Sampling
Somewhat more common than simple random samples are systematic samples, which are drawn by starting at a randomly selected element in the sampling frame and then taking every n th ... (more...)

sampling (statistics) -- Britannica Online Encyclopedia
Every combination of elements drawn from the population also has an equal probability of being selected. Sampling based on probability theory allows the investigator to determine ... (more...)

Open Question: I apply, they don't reply...?
I call, they don't answer, etc. Seems to be EXTREMELY common in the business world these days (New York and Miami). The rate of return on business inquiries is something like 25%, even to personalized presentations that can take a couple of hours to prepare. Most recently, a local newspaper seeking freelance writers ("Attach five samples, please"), and a photography book-publisher (select, modify and attach 12 HQ JPEGS), plus cover letters for each, of course. Might as well have sent the applications to Santa. A follow -up call gets that dreamy receptionist who sounds like she's doing her nails. The 'no-answer' thing extends to dating, too -- but that's more understandable. It seems I'm dealing with a generalized social condition, rather than isolated circumstances. Same thing that drove the economic crumble recently: Insider trading. Nepotism. Closed shop. Clannishness. Even plain old deception. In a word, there seems to be a lot of corruption around. The social and job scenes are more like a jungle than a farm. So what's the question? What to do about it! Daddy's boys and and "Quit Whining" pseuds please abstain. Take your litter elsewhere. (more...)

Open Question: Problems in Statistics for the Behavior Sciences?
I have a hard time understand math problems. Can any one help me to understand these two problems? 1. For a sample selected from a population with a mean of u = 50 and a standard deviation o = 10: a. What is the expected value of M and the standard for a sample of n = 4 scores? b. What is the expected value of M and the standard error of M for a sample of n = 25 scores? Please help or refer me to free assistance. (more...)

Open Question: Statistics help!!! please!?
ok so i have a bunch of questions for stat hw, and im really confused. so im gonna put the 1st question up so someone can help me understand! thanks...best explanation gets 10 points! ok so summary of the info an ELISA tests chickens for a disease. if it tests positive it has the disease. The test is not always accurate and sometimes there is a false negative. Scientists consider the false negatives and have created a procedure to determine if it is present. *randomly select 10 chickens *perform blood sample on the 10 chickens *conclude that at least 3 out of 10 chickens are positive Suppose a vet does the procedure on 100,000 chickens at a commercial egg produce farm. The test has a probability of .05 of producing a false positive and .10 of a false negative. The Question: If no chickens in the flock is infected with the virus, what is the probability that the vet will conclude that the virus is not present in the flock? (more...)

Open Question: AP STATISTICS...HELP PLEASE?
these are ap statistics questions: 1.according to the central florida blood bank, 13% of first time donors return to make a second donation within 3 months. in the fall of 2001 they tracked 6000 first time donors and found that 891 donated a second time within 90 days. what is the probability that the rate of repeat donations among the sample group was greater than the long term rate? a. less than 0.001 b. 0.007 c. 0.014 d. 0.492 e. 0.983 2. a local dealer has two video stores in town, one of foothill drive and the other on grand avenue. the foothill drive store does 70% of the dealer's business in the town and the grand avenue store does the rest. in the foothill drive store 40% of all rentals are DVDs. at the grand avenue store 30% of all rentals are DVDs. if a customer is selected at random, what is the probability that she rented a DVD? a. 0.175 b. 0.33 c. 0.35 d. 0.37 e. 0.7 3. an alumni association of a major university finds that 30% of its members attained advanced degrees, 50% attained a bachelor's degree and 20% did not graduate. the mean income of a graduate with an advanced degree is $75,000, the mean income of a graduate with a bachelor's degree is $54,000 and the mean income of a non graduate is $36,000. from past results alumni members donate 5% of their income to the univeristy. if 50 members of the alumni association are randomly selected, what is the expected total donation? a. 2,750 b. 2,835 c.137,500 d.125,000 e. 141,750 Also, how do i find the answer for each question??? (more...)

Open Question: MATH QUESTIONS...PLEASE HELP?
these are ap statistics questions: 1.according to the central florida blood bank, 13% of first time donors return to make a second donation within 3 months. in the fall of 2001 they tracked 6000 first time donors and found that 891 donated a second time within 90 days. what is the probability that the rate of repeat donations among the sample group was greater than the long term rate? a. less than 0.001 b. 0.007 c. 0.014 d. 0.492 e. 0.983 2. a local dealer has two video stores in town, one of foothill drive and the other on grand avenue. the foothill drive store does 70% of the dealer's business in the town and the grand avenue store does the rest. in the foothill drive store 40% of all rentals are DVDs. at the grand avenue store 30% of all rentals are DVDs. if a customer is selected at random, what is the probability that she rented a DVD? a. 0.175 b. 0.33 c. 0.35 d. 0.37 e. 0.7 3. an alumni association of a major university finds that 30% of its members attained advanced degrees, 50% attained a bachelor's degree and 20% did not graduate. the mean income of a graduate with an advanced degree is $75,000, the mean income of a graduate with a bachelor's degree is $54,000 and the mean income of a non graduate is $36,000. from past results alumni members donate 5% of their income to the univeristy. if 50 members of the alumni association are randomly selected, what is the expected total donation? a. 2,750 b. 2,835 c.137,500 d.125,000 e. 141,750 Also, how do i find the answer for each question??? (more...)

Resolved Question: Probability Problems (10 points for best answer!)?
A.) How many ways can you select 1 flavor of ice cream, 1 topping and 1 drink if there are 5 flavors of ice cream, 3 toppings and 4 drinks to choose from? B.) How many ways can you select a 4-digit passcode without repeating any digit? C.) How many ways can you select 3 toppings for a pizza with 8 toppings to choose from? D.) What is the probability of rolling a single die and it landing on a prime number? (Remember, the number 1 is not considered prime.) E.) How many items are in the sample space for rolling a die and spinning a spinner with 4 different colored sections (red, yellow, green and blue)? F.) What is the probability of rolling the die and spinning the 4 sectioned spinner described in part E, and getting the number 5 and the color red? (more...)

Open Question: where can i find an up-to-date list of non-essential goods which are subjected to an excise tax (Philippines)?
i have already tried researches on this topic but the pages took me to some (newly?)-proposed taxes on cosmetics (surgeries) and on selected goods and appliances dated February 2005. these are bills 2267 and 2831, bills i haven't monitored whether approved and became laws as of December 2008. i also would want to ask for computational examples about how to arrive at the excise tax. if there is also a graduated basis in computing, please write it here or please paste the hyperlink (url). i am looking forward to your answers. it will help me a lot. anyway, i am in the Accountancy program, in case that you wonder whether i'm a lawyer or not. the sample computations will of great benefit. thank you. God bless! (more...)

Resolved Question: yet again, more statistics math questions?
1) The national association of retailers reports that 62% of all purchases are now made by credit card; you think this is true at your store as well. On a typical day you make 20 sales. A) Let X represent the number of customers who use credit cards on a typical day. What is the probability model for X? specify the model (name and parameters). B) What is the probability that on a typical day at least half of your customers use credit cards? 2) NY public health officials report that currently 22% of adults smoke. They hope the newly increased ciggarette taxes will reduce this rate. They plan to check in Decemberby selecting a random sample of 1200 new yorkers to estimate again the percentage of adults who smoke. a) Verify that a normal model is a useful approximation for the binomial in this situation. b) in that december sample how many smokers would it take to convince you that the percentage of NY adults who smoke had decreased significantly? Explain. (more...)

Open Question: What is the answer to my statistic question?
What is the answer for problem 1: To improve gas mileage, a new fuel injection system cost of Type 1 error (marketing a bad product/rejecting the Null Hypothesis), the level of significance is set at 1%. The claim for the Alternate Hypothesis is that the new injector will get greater than 30 miles per gallon (mpg). The Null Hypothesis is that the injector will get 30mpg or less. After sampling 100 engines with the new injector system, it was found that the mean mileage was 32mpg with a standard deviation of 8mpg. Determine the critical value and make your decision concerning which hypothesis is correct. Draw the distribution curve and label the mean of the population (null assumption), the critical value, and the mean of the sample. What is the answer to problem 2: You are planning on offering a management course to prospective management candidates and your hired consultant has two versions of the course he can provide. The first version of the course is given with handouts only and is the cheaper of the two courses. The second version is supported by video presentations and is the more expensive of the two courses. Two sample classes of four students each were given to randomly selected candidates. The first class did not have the supporting video presentations while the second one did. An exam was given at the end of the courses and each student was rated from 0 to 10 on their retention of the course material. How sure can you be that there is an improvement in retention to justify the added expense of Course #2. Compute the sum square deviations, the degrees of freedom, the variances and variance ratio needed to apply the Fisher table. The data is as follows: Course #1 (no video) 6 6 8 8 Course #2 (with video) 7 9 10 10 The book used is "Statistics in Plain English." (more...)

Open Question: A simple statistics question?
A population has a mean of 75 and a standard deviation of 8. A random sample of 800 is selected. The expected value of x bar is: I tried to figure out this question, but just don't know how. Please help me with this.. Thanks for your time.. (more...)

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