1. A teacher wants to describe the results of a particular test. The test grades were 88,78,79,69,83,82,90,94,95,87,85,83,88,89,90,65,76,88,62,90. What would be and how would you find the mean, median, mode, range, variance, standard deviation, an ordered array, a stem-and leaf, a box-and-whiskers and a bar chart of the class sc
1 (a) The following data was obtained for two variables, X & Y X 135 110 130 145 175 160 120 Y 145 100 120 120 130 130 110 (i) Plot a scatter diagram for this data (ii) Calculate the Pearson product moment correlation coefficient and the regression coefficients for this data (iii) This data set seems to contain an out
The reliability coefficient is maximized when: a) The examinees are heterogeneous b) the examiners are homogeneous c) THe examinees are very similar d) Both b abd c are correct Answers are explained below.
Statistic that should be used to determine the extent to which the observers agree in their rankings of frustration.
Suppose a researcher has trained observers to rank participants according to their level of frustration when trying to solve a puzzle. What statistic should be used to determine the extent to which the observers agree in their rankings of frustration? a. The measure of central tendency b. The Spearman correlation coefficien
I have tried these questions with no luck (see attached file). Is there a guide that you can provide that will help me figure out what test I should be using for certain data sets? Please help! Thanks you.
An example of how to write up Exploratory Factor Analysis