What Is a Statistic?
Read this topicExplanations 5
- Let's say we are given a population, say, all of the books in the world. That is way too many books to count. If we want to use a number to describe something about the populati…
By Daniel Hu, Alex Federspiel, Ruiran Xun
- Statistic A statistic is an estimate of some "true" value (population parameter). It is a numerical value or measure that summarizes a particular characteristic or feature of a …
By Paris, Anusha Rahman
- Statistics Statistics is a science that studies and develops methods for collecting, analyzing, interpreting and presenting data. So, let’s say for example, that we want to know…
By Sarah Walker, Anusha Rahman
- A Statistic We've talked a lot about probability, so it's now time to move onto statistics. Statistics is the branch of math that helps us to collect, organize, study, and under…
By Anusha Rahman
- (Video) What is Statistics? by LearnFree Watch this video to gain a broad understanding of what statistics is and how it's used in the real world. As the video explains, statist…
By Anusha Rahman
Problems 20
- In response to the research question: "What is the national average for the number of books a library contains?" Is the average number of books found in a single library a stati…
- How Fulfilling Are Amazon Fulfillment Centers? "Jeff Bezos, the CEO of Amazon wants to know whether or not his fulfillment center workers are satisfied with their job (on a scal…
- "A Pokemon trainer wants to know what percentage on average her 10 other trainer friend's Pokemon are evolved at least once. She conducts a research study and asks all 10 of her…
- Netflix Networks "A network security researcher noticed that 37% of all of the world's internet traffic can be attributable to Netflix alone. " Is the value being investigated i…
- A worried axolotl (underwater salamander) pet owner is going away on holiday for a week. She wants to know how long her axolotl can survive without food and whether or not it is…
- According to a research study, only 2% of all muffins produced in America are gluten-free. Is this 2% likely to be a statistic?
- True or False\text{True or False}True or False === A statistic is an estimate of some "true value of interest" based off of a sample of the representative population.
- True or False\text{True or False}True or False === A statistic is basically the same as an estimate.
- Money Means You want to know the average amount of money 18 yr olds have worldwide. Is this likely to result in a statistic?
- I have 3 cookies. I want to count the average number of chocolate chips in my cookies. Would I likely find a statistic or the true value for the average # of chocolate chips?
- You want to know what the most popular/favored fruit in the world is. To get an idea of what it may be you conduct a survey that record the favorite fruit of 100 people in a rep…
- True or False\text{True or False}True or False === The difference between a statistic and a parameter is that statistics describes an entire population.
- You draw a random sample of 100 Youtube subscribers and determine that their mean income is 27,500 (a statistic). You conclude that the population mean income μ is likely to be …
- True or False\text{True or False}True or False === One value describes the parameter while multiple (usually similar) values can describe the same statistic.
- The main campus at Penn State University has a population of approximately 42,000 students. A research question is "what proportion of these students smoke regularly?" A survey …
- What is the statistic?
- True or False\text{True or False}True or False === Sample size is never bigger than population size and that is why we can only conclude with estimates/statistics when drawing d…
- True or False\text{True or False}True or False === The accuracy of a statistic depends on sample size and how representative it is.
- True or False\text{True or False}True or False === A statistic from a sample is just as accurate as calculating the parameter for the entire population.
- You want to measure the average size of a tiny finch on Galapagos Island. The finch is small and somewhat difficult to find because of all the vegetation. Are you likely or unli…