# statistic

1. ### Scattered data

If A=1,2,3,10 and B=1,1,1,13 Which one has more scattered data A or B and why?
2. ### Finding the frequencies with missing values.

In short, the problem is as follows: We asked n=40 households about the sizes of their houses. All the answers are measured in m² and fall into 5 classes. From all the received data we know the mean is 95.625m² and the median is 85.385m² Question 1: Column (hi) represents the absolute...
3. ### Which statistic test?

Any chance you know the answer to this? I know it's not paired t-test but don't know which of the others it is A hotel manager would like to test whether the average time taken for customers to complete the hotel's online booking form is less than 5 minutes. She selects a sample of 40...
4. ### Correlation

I have to say if my correlation is significant or not so I did a t-test but I don't know what to do with the outcome. I calculated my correlation using excel = 0,754651674 R= 0,754651674 R square= 0,569499149 variance 57% -> strong connection Test statistic t = r/âˆš1-rÂ²/n-2...
5. ### Correlation

I have to say if my correlation is significant or not so I did a t-test but I don't know what to do with the outcome. I calculated my correlation using excel = 0,754651674 R= 0,754651674 R square= 0,569499149 variance 57% -> strong connection Test statistic t = r/âˆš1-rÂ²/n-2...
6. ### 153 Probable Statistic Math

I need help step-by step showing how you got the answer Please Five percent of the eyeglasses sold at an optical retailer have tinted lenses. Forty pairs of glasses are sold on a particular day and six have tinted lenses. Identify n, p, and x. n = p = x =
7. ### IB math exploration

Hi, I am currently in my second year of the IB programme, I'm trying to do my internal assessment on caffeine intake vs number of words completed in a text vs errors. My aim is to explore whether caffeinated or decaffeinated coffee does affect your writing skills. I use an online speed typing...
8. ### p.d.f of sufficient statistic

Hi, If someone could help explain the first step in this example, it would be very much appreciated: Consider a random sample X1,X2,...Xn of size n from the Uniform(0,Î¸) distribution, where Î¸ > 0. Show that the p.d.f q(t|Î¸) of the sufficient statistic T(x) â‰¡ max Xi is given by...
9. ### Statistic With No Population?

Can a statistic ever be calculated based solely on a sample with no population to compare it to? Or I guess another way to put it is, when the sample is the population? What Iâ€™m wondering about this for is the philosophical argument of the universeâ€™s fine-tuning, which partially bases...

14. ### statistic. how do I get this answer?

The diameters of bearing journals ground on a particular grinder can be described as normally distributed with mean 2.0005 in. and standard deviation .0004 in. (a) If engineering specifications on these diameters are 2.0000 in. +/- .0005 in, what fraction of these journals are in...

One year, at England University, there were these FOUR students who were taking Chemistry and who did pretty well on all of the quizzes and labs. These students were so confident that they decided to party the weekend before their final exams. They partied and drank alcohol, which resulted in...
16. ### [statistic] Problem with probability

Can someone explain me those results please : Group of children consists of 9 boys and 6 girls. Children randomly divided into a queue. What is the probability ... a.) that the girl is on 3rd place in queue b.) to stand together all boys and all girls together c.) that the queue does not begin...