7. Unethical statistical practices
Homework Answers
Selecting unrepresentative samples is the unethical statistical practice. Because when we collect samples, our main objective is to find such a sample which is a well representative of the parent population. Samples are known as mini population.
Discarding observations that do not have desired qualities - the above option is partly unethical but partly ethical. Because to decide that the given data is not appropriate or not good qualities, we need a perfect scrutiny , otherwise we can not discard any data because in the world of statistics " loosing information " is unethical.
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7. Unethical statistical practices
7. Unethical statistical practices Aa Aa Which of the following are examples...
10. Properties of the standard deviation and range Aa Aa E Which of the following is...
10. Properties of the standard deviation and range Aa Aa E Which of the following is a true statement concerning the standard deviation? Check all that apply. The standard deviation provides a measure of the spread between the two most extreme scores in distribution The standard deviation is more subject to sampling variation than the range. It is more complex to compute the standard deviation than the range. A researcher is studying psychological factors in artistic achievement among teenage girls....
6. The sampling distribution of the sample proportion Aa Aa In 2007, about 14% of new-car purchas...
6. The sampling distribution of the sample proportion Aa Aa In 2007, about 14% of new-car purchases in New York were financed with a home equity loan. [Source: "Auto Industry Feels the Pain of Tight Credit," The New York Times, May 27, 2008.] The ongoing process of new-car purchases in New York can be viewed as an infinite population Define p as the proportion of the population of new-car purchases in New York that are financed with a home equity...
6. The sampling distribution of the sample proportion Aa Aa In 2007, about 14% of new-car...
6. The sampling distribution of the sample proportion Aa Aa In 2007, about 14% of new-car purchases in New York were financed with a home equity loan. [Source: "Auto Industry Feels the Pain of Tight Credit," The New York Times, May 27, 2008.] The ongoing process of new-car purchases in New York can be viewed as an infinite population Define p as the proportion of the population of new-car purchases in New York that are financed with a home equity...
Which of the following are possible examples of sampling distributions? (Select all that apply.) average male...
Which of the following are possible examples of sampling distributions? (Select all that apply.) average male height based on samples of size 30 all mean trout lengths in a sampled lake average SAT score of a sample of high school students mean trout lengths based on samples of size 5 heights of college students at a sampled university
Selecting a random sample is an example of a statistical experiment, and the sample statistic p i...
Selecting a random sample is an example of a statistical experiment, and the sample statistic p is a numerical description of the result of the experiment. Therefore, p is a random variable. The probability distribution of p is called the sampling distribution of p In practice, you select one random sample and use the information from that sample to estimate the population parameter of interest. However statisticians sometimes perform a procedure called repeated sampling, in which the experiment is run...
Consider the following population: (4,7, 10, 13). Note that the population mean is the following. 4+7+10+'13...
Consider the following population: (4,7, 10, 13). Note that the population mean is the following. 4+7+10+'13 -8.5 (a) Suppose that a random sample of sine 2 is to be selected without replacement from this population. There are 12 possible samples (provided that the order in which observations are selected is taken into account): 4,7 4,10 4,13 7.4 7.10 7.13 10,4 10,7 10, 13 13,4 13,7 13, 10 Compute the sample mean for each of the 12 possible samples Sample Sample...
10. Advantages and disadvantages of the related-samples design Aa Aa E Disadvantages of using a related...
10. Advantages and disadvantages of the related-samples design Aa Aa E Disadvantages of using a related sample (either one sample of participants with repeated measures or two matched samples) versus using two independent samples include which of the following? Check all that apply. O A study that uses related samples to compare two drugs (specifically, one sample of participants with repeated measures) can have a carryover and/or order effect such that the effects of the drug taken before the first...
Multiple choice? Select all that apply? 2. Foreign investment Aa Aa E Which of the following...
Multiple choice?
Select all that apply?
2. Foreign investment Aa Aa E Which of the following is an example of portfolio investment? O A loan made at the market rate of interest from an American banking syndicate to an entrepreneur in a developing country The purchase by an individual German investor of securities in companies based in a developing nation The purchase of a factory in a developing country by a foreign investor An American company allowing a firm in...
QUESTION 11 For each of the examples below decide which statistical test should be used to...
QUESTION 11 For each of the examples below decide which statistical test should be used to analyze the data. You want to test the effect of one IV on a DV with three levels with different A. Z-test participants receiving each of the levels B. Pearson Correlation You want to compare a sample with a population, but don't know all of the population parameters C. Single sample t-test One group of participants took medicine, another group took a placebo pil...
V V For each of the examples below decide which statistical test should be used to...
V V For each of the examples below decide which statistical test should be used to analyze the data. You want to test the effect of one IV on a DV with three A. Z-test levels with different participants receiving each of the levels B. Pearson Correlation You want to compare a sample with a population, but don't C.Single sample t-test know all of the population parameters D. Independent samples t-test One group of participants took medicine, another group E....
10. Properties of the standard deviation and range Aa Aa E Which of the following is a true statement concerning the standard deviation? Check all that apply. The standard deviation provides a measure of the spread between the two most extreme scores in distribution The standard deviation is more subject to sampling variation than the range. It is more complex to compute the standard deviation than the range. A researcher is studying psychological factors in artistic achievement among teenage girls....
6. The sampling distribution of the sample proportion Aa Aa In 2007, about 14% of new-car purchases in New York were financed with a home equity loan. [Source: "Auto Industry Feels the Pain of Tight Credit," The New York Times, May 27, 2008.] The ongoing process of new-car purchases in New York can be viewed as an infinite population Define p as the proportion of the population of new-car purchases in New York that are financed with a home equity...
6. The sampling distribution of the sample proportion Aa Aa In 2007, about 14% of new-car purchases in New York were financed with a home equity loan. [Source: "Auto Industry Feels the Pain of Tight Credit," The New York Times, May 27, 2008.] The ongoing process of new-car purchases in New York can be viewed as an infinite population Define p as the proportion of the population of new-car purchases in New York that are financed with a home equity...
Selecting a random sample is an example of a statistical experiment, and the sample statistic p is a numerical description of the result of the experiment. Therefore, p is a random variable. The probability distribution of p is called the sampling distribution of p In practice, you select one random sample and use the information from that sample to estimate the population parameter of interest. However statisticians sometimes perform a procedure called repeated sampling, in which the experiment is run...
Consider the following population: (4,7, 10, 13). Note that the population mean is the following. 4+7+10+'13 -8.5 (a) Suppose that a random sample of sine 2 is to be selected without replacement from this population. There are 12 possible samples (provided that the order in which observations are selected is taken into account): 4,7 4,10 4,13 7.4 7.10 7.13 10,4 10,7 10, 13 13,4 13,7 13, 10 Compute the sample mean for each of the 12 possible samples Sample Sample...
10. Advantages and disadvantages of the related-samples design Aa Aa E Disadvantages of using a related sample (either one sample of participants with repeated measures or two matched samples) versus using two independent samples include which of the following? Check all that apply. O A study that uses related samples to compare two drugs (specifically, one sample of participants with repeated measures) can have a carryover and/or order effect such that the effects of the drug taken before the first...
Multiple choice?
Select all that apply?
2. Foreign investment Aa Aa E Which of the following is an example of portfolio investment? O A loan made at the market rate of interest from an American banking syndicate to an entrepreneur in a developing country The purchase by an individual German investor of securities in companies based in a developing nation The purchase of a factory in a developing country by a foreign investor An American company allowing a firm in...
QUESTION 11 For each of the examples below decide which statistical test should be used to analyze the data. You want to test the effect of one IV on a DV with three levels with different A. Z-test participants receiving each of the levels B. Pearson Correlation You want to compare a sample with a population, but don't know all of the population parameters C. Single sample t-test One group of participants took medicine, another group took a placebo pil...
V V For each of the examples below decide which statistical test should be used to analyze the data. You want to test the effect of one IV on a DV with three A. Z-test levels with different participants receiving each of the levels B. Pearson Correlation You want to compare a sample with a population, but don't C.Single sample t-test know all of the population parameters D. Independent samples t-test One group of participants took medicine, another group E....
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