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sampling

            
            
            
             PAGE NUMBERS USED: 235-236 Behavioral Research: Tools And Techniques.
             When conducting research sampling is a very important aspect due to it being the selection of a subset of cases from some population of interest. One of the reasons that sampling is important is that it is not likely that an investigator to be able to study all the people or cases in a given category. Another reason is that some sort of a selection process has to be carried out in an unbiased way so that it does not yield and sort of valid information. A sample is taken from the entire group of people or cases that involve direct interest to their investigation. The sample that was taken out of the population is used to make generalizations about the population from which it was drawn. There are many reasons that sampling is important. There is also a lot of ways to cause errors within the sample. When conducting research the tool of sampling is a very important.
             Is the size of the sample important?.
             PAGE NUMBERS USED: 240-241 Behavioral Research: Tools And Techniques.
             When conducting research the size of the sample is very important? The reason for this is the larger the sample the more reliable and representative the data is compared to a smaller sample. When deciding on sample size the researcher needs .
             Adamczyk 2.
             to consider both the statistical logic and the praticality. The size of the researchers sample should be specified in advance in order to avoid the accusation that data .
             collection was halted as soon as the results supported the hypothesis. There are a few things that should be considered in making the decision on the sample size. These factors include the size of the population. According to the book this means the larger the population the larger the sample size should be but that is false. In class discussion we learned different. We learned that a sample of a small universe can be small. The complete formula for projection actually takes account of the proportion the sample is of the total universe.


Essays Related to sampling

1. Who's Cheating on the Vinegar?

There are four types of vinegar - Sample A, Sample B, Sample C, Sample D. ... Then repeat all the samples again to achieve accurate results. ... Results Acid Sample 1st Test 2nd Test Average of Each Sample of Vinegar. A 28.3ml 29.3ml 28.8ml B 45.4ml 45.1ml 45.25ml C 20.0ml 20.2ml 20.1ml D 13.6ml 13.4ml 13.5ml Evaluation The sample that contained the most concentrated acid is Sample B because it takes the most amount of alkali to neutralise it. ... The formula for finding out which is the best value for money is Amount of alkali needed to neutralise the vi...

  • Word Count: 965
  • Approx Pages: 4
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2. Ration Analysis

Financial ratios can be used to evaluate the overall condition of Sample Co. ... The first question to be answered is the profitability of Sample Co.. ... Leverage is area of evaluations of Sample Company's condition. ... In evaluating Sample Co. ... Sample Co. ...

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3. Ratio Analysis

Sample Companies" Profitability Ratios ROI for Sample CO. is $350 / $7,196 = 4.8% using net income. ... Sample Companies" Profitability Ratios Inventory turnover for Sample CO. is $6,523 / (($1,323 +$1,211)/2) = 5.1 times. ... Sample Companies" Profitability Ratios The debt ratio for Sample Co. is $1,287 / $4,852 = 26.5% and the debt to equity ratio is $1,287 / $3,565 = 36.1%. ... Sample Companies" Profitability Ratios For Sample Co. the working capital is $4,006 - $2,758 = $1,248, the current ratio is $4,006 / $2,758 = 1.45, and the acid test ratio is $155 + $2,174 / 2,758 = .84....

  • Word Count: 1489
  • Approx Pages: 6
  • Has Bibliography
  • Grade Level: High School

4. Sampling Design - Ford Motor Company

The sample size for the non-hybrid cars included all the vehicles sold by the Ford firm. ... The Sample Size The sample size was carefully determined to give to the best of the research requirement the real representation of the research parameters, maintaining the RIGOR requirements of the study. ... Calculating Sample Size Using z-score, standard deviation and 95% confidence level with 5% margin of error, you can get sample size by substituting into this formula Sample size= (z-score)2 *(standard deviation)*(1-standard deviation)))/(margin of error)2 Whereby z-score = (Data value- Mean of al...

  • Word Count: 829
  • Approx Pages: 3
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5. Hypothesis Testing of a Sample of Stock Prices

From there I had to compute the mean and standard deviation of the sample prices of the stocks. I then created a histogram to show the frequency distribution of the stock price data of my sample. ... Data Compilation & Statistic Calculation I then had to research the individual current stock prices of each of the 50 companies from my sample data from Project III as well as my 30 companies from my sample data from this project. ... This basically means that the sample results, or evidence, provides no reason to doubt the assumption that the mean stock price of the sample data from the first...

  • Word Count: 1315
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6. Rebar

Steel Grain Analysis on Mounted Samples 1. ... The sample was then sanded smooth to remove the rough edges on the 0rebar sample. ... The annealed sample one can see the ferrite and pearlite grains in the sample. ... The sample was then sanded smooth to remove the rough edges on the 0rebar sample. ... The sample was moved in different spots each time to get a average overall hardness reading for the normalized rebar sample. 4.The sample was place into the Simplemet 3 mounti...

  • Word Count: 2661
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7. Experiment using a Gouy Balance

Introduction For this experiment, we used an experimental arrangement of a Gouy balance to measure the susceptibility of various samples. ... For our experiment, in order for us to obtain the susceptibility of a sample, we first calibrate the balance with a standard sample of known susceptibility, that is we find the magnetic force on a sample of known susceptibility and we compare this force to the unknown sample of same size and packing, finally the susceptibility of the unknown will be determined by using the ratios of the two forces and the appropriate equations for calculating the susc...

  • Word Count: 569
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  • Grade Level: Undergraduate

8. The Transformation of Bacterial DNA

Mohammed obtained a similar value for his sample (1.79). ... Mohammed had only one, heated sample. ... There should be two bands in the unheated sample and one band in the heated sample. ... My sample emitted fluorescence, while my partner's did not. ... My sample (with ARA) glowed under the UV light, even after all the labs and changes were performed, and extracted the GFP protein from the sample....

  • Word Count: 811
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9. conductivity of water

I therefore used two samples of soil, one normal sample from outside my apartment and another from a bag of potting soil. ... One sample was taken from a pile of dirt outside my apartment complex. ... I therefore used samples of five, ten, and fifteen grams for each type of soil. ... For the samples involving different soil and different amounts, sample A refers to the sample containing five grams, sample B to the ten gram trial, and sample C to the fifteen gram trial. In the case of the trial studying the effect of time variation, sample A is the result of one minute of exposure, sample B...

  • Word Count: 2074
  • Approx Pages: 8
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