Email: bbcnoun@gmail.com Whatsapp/Telegram: 08131667008 EDU821 Question: A statistic Answer: Sample characteristics Question: The following represents age distribution of students in an elementary class. Find the mode of the values: 7, 9,10, 13,11,7, 9,19,12,11,9, 7, 9,10,11. Answer: 9 Question: Where a data set has an even number of observations, the median Answer: is the average value of the two middle items Question: The sum of deviations of the individual data elements from their mean is Answer: sometimes greater than and sometimes less than zero, depending on the data elements Question: When the correlation r, is close to one Answer: there is a strong linear relationship between the variables Question: If the standard deviation of a sample of 50 observations is 17.0, what the variance of that sample? Answer: 289 Question: The value that has half of the observations above it and half the observations below it is called the Answer: Median Question: Abubakar has just found that the variance of a sample of 32 observations to be 625. What then is the standard deviation of the sample? Answer: 25 Question: The difference between the largest and the smallest data values is the Answer: Range Question: AÂ Principal asked students in a class their ages. On the basis of this information, the Principal gave the average age of all the students in the whole school as 21 years. This is an example of Answer: A statistical inference Email: bbcnoun@gmail.com Whatsapp/Telegram: 08131667008