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ca. 9 % has an higher IQ.... (IQ 119 90th percentile equals top 10%)

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13y ago

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Why is population sampling most effective when a population has an even dispersion pattern?

If the population is not evenly dispersed then the sample may unfortunately come from a section that is not typical of the population. That means the sample will not be representative of the population and so any estimates for the population, based on sample statistics are biased and therefore unreliable.


Does typical mean the same as unique?

I think typical means repeditive and unique meansnot to often at all


Would you expect the volatility of a share index to be greater than or less than the volatility of a typical share?

The same - because that is how "typical" would be defined.


Briefly explain the procedure for determining the sample size in marketing research?

If you're running a survey or a test, how many responses do you need for your data to be "statistically valid?" It's often a difficult goal to achieve, but without valid data, you can't trust your test results.When you're determining the statistical validity of your data, there are four criteria to consider.1. Population: The reach or total number of people to whom you want to apply the data.2. Probability or percentage: The percentage of people you expect to respond to your survey or campaign.3. Confidence: How confident you need to be that your data is accurate. Expressed as a percentage, the typical value is 95% or 0.95.4. Margin of Error or Confidence Interval: The amount of sway or potential error you will accept. It's the "+/-" value you see in media polls. The smaller the percentage, the larger your sample size will need to be.For example, if 45% of your survey respondees choose a particular answer and you have a 5% (+/- 5) margin of error, then you can assume that 40%-50% of the entire population will choose the same answer.Armed with these basic concepts, you can use the Sample Size Calculator and Confidence Interval Calculator at Survey System.In addition, this post on Marketing Profs clearly outlines how to decide whether your sample size is statistically valid. Wade Nelson did an excellent job of explaining the process and even included a link to another free sample size calculator.


Font size for report?

The typical font size is usually 12.

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