data variance

Find the variance of the data set {1, 2, 3, 4, 10}. => 10 or 9 or 8 or 7..

Find the F-test value for testing the difference between two population variances. The data shows the two samples from each of the populations. => 1.11 or 0.63 or 2.38 or 2.16..

The grades obtained by 6 students in an exam are: 94, 90, 98, 92, 96, 100. Find the variance of the data. => 3.4 or 15.8 or 11.7 or 8.3..

The data shows the deaths related to bad weather over 6 years. Find the F-test value and verify whether the variances differ at 90% confidence level. => 7.68, differ or 9.33, do not differ or 5.05, differ or 4.96, do not differ..

The data provided shows the number of people leaving two different companies in a year. Find whether the variance of the number of people leaving the companies differ at 90% and 80% confidence levels. => do not differ, do not differ or differ, do not differ or do not differ, dif..

Check whether the population variances differ significantly at 90% confidence. Also find out F-test value. The data relating to two samples from those populations are shown in the table. Sample size Sample variance 25 7 16 5.6 => 2.11, do not differ or 2.29, differ or ..

The standard deviation of the amount of car sales for 6 years in state 1 is 1.14 and for state 2 is 1.08. Find the F-test value. Does the variance of amount of car sales for both states differ at 90% confidence level? The data is in millions of dollars. => 2.09, yes or 1.11, no ..

Calculate the standard deviation and the variance for the following data 7, 8, 11, 6, 13, 8, ..

Tools of data analysis Mean, median, mode, range, standard deviation, variance Permutations and combinations Data representation methods Types of events, conditional probability Statistical methods to make inferences Organization and display of data Predi..

Calculate the variance and standard deviation from the following data..