data values

In a two-way ANOVA, variable A has three levels and variable B has five levels. The number of data values in each group is four. Find the degrees of freedom for for factor A , factor B , factor A × B and for the within (error) factor. => 3, 5, 15, 45 or 2, 4, 8, 45 or 3, 5..

Find the minimum value of the data set. 53, 3, 39, 13, 25, 39, 16, 13, 18, 20 => 13 or 53 or 39 or 3..

Select the correct statement(s). I. Variables whose values are determined by chance are called random variables. II. Value assumed by a variable is called data. III. A variable is a characteristic or attribute that can assume different values. => I only or II..

Recognize the incorrect statement(s). I. When all data for a variable are transformed into z scores, the resulting distribution will have a mean of 1 and a standard deviation of 0. II. The z score represents the number of standard deviations that a data value falls abo..

Recognize the false statement(s). I. The numbers used to separate the classes, so that there are no gaps in the frequency distribution are called class limits. II. Class width for a class is found by subtracting the lower class limit from the upper class limit. III. Class midpoint is obtained by ad..

In a two-way ANOVA, factor A has a levels and factor B has b levels. The number of data values in each group is n . Find the degrees of freedom for factor A and factor B . => ( a - 1)( b - 1), a b ( n - 1) or a - 1, b - 1 or a + 1, b + 1 or a , b..

Results and observations of scientific experiments should be properly recorded under headed columns and numbered rows. The headings must include the units in which each quantity is measured. Graphs are very helpful in comparing measurements. The general rule in plotting the graph of a given ..

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 2.23, do n..

For the data shown, find the test value and check whether the means differ at 95% confidence. First 45 67 23 78 Second 50 60 30 69 => 0.123, the means differ or 0.282, the means do not differ or 0.245, the means do not differ or 0.141, the means differ..

Find the F-test value and the critical value at 95% confidence for testing the population variances. The data relating to samples are shown. Sample size Sample variance 30 12 25 8 => 1.2, 2.15 or 2.15, 1.2 or 1.94, 1.5 or 1.5, 1.94..