Parameter and Statistic In a Citrix Security survey of 1001 ad...

Question

Parameter and Statistic In a Citrix Security survey of 1001 adults in the United States, it was found that 69% of those surveyed believe that having their personal information stolen is inevitable. Identify the population and sample. Is the value of 69% a statistic or a parameter?

Accepted Answer

All right. Hello, everyone. So this question says, in a health survey of 950 teenagers in a town, it has found that 74% of those surveyed believe that getting at least 8 hours of sleep each night is essential for good health. What is the population and sample in the survey? Determine whether the value of 74% is a statistic or a parameter. And here on the screen, we also have 4 different entry choices labeled A through D. So the first part of this question is understanding the difference between the population. Right. And the sample So, Recall first and foremost that the population refers to the entire group that you're trying to learn more about by conducting the study. But the problem is, is that most of the time a given population is simply too big for any one study to be able to. Fully analyze, right? Oftentimes, populations are too big to be included in one single study. That's why subsets of a population can be used in a study. To then draw conclusions that can be applied more generally to the larger population. So the sample therefore. is a subset of the population that you are trying to learn more about by conducting the study. So the study that's being described in this particular question is about teenagers and how they view their beliefs about sleep or trying to understand. The beliefs of sleep among teenagers within a certain town. So the population that is the group of people that you want to learn more about by conducting the study, is all teenagers. Because the purpose of the study is to understand how teenagers feel about sleep, what are their beliefs about sleep. So the sample refers to the teenagers that were actually surveyed and were included in the actual study. So in this case, The population would be all teenagers, but the sample would be the 950 that were actually surveyed. Those are the subset of the greater population. So this leads us now to the last part of the question. Is that 74% A statistic or a parameter. Now, the good news is is that you can make a connection based on the first letter of each word. And what I mean by that. Is, for example, that a parameter starting with a P. Applies to a population. Whereas a statistic. Starting with an S, applies to a sample. So parameters are numbers that describe the entire population, whereas statistics are numbers that are derived from a sample of the population. And so because that 74% was based on. The responses of the 950 teenagers that were surveyed, this is a statistic because it was calculated from a sample, which again is a subset of the greater population. And so with all that being said, right? Our answer is going to be option A in the multiple choice. Because the population is all teenagers in the town. The sample is the 950 teenagers that were surveyed. And Because the 74% was derived from the sample, it is a statistic. So with that being said, thank you so very much for watching and I hope you found this helpful.

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