Statistics

The most common abuse of correlation in studies is to confuse the concepts of correlation with those of causation. Examples: No correlation: Height of a student and good grades The height of a student has no relationship to good grades. A correlation but not causation: Good SAT scores and good grades Many times, you will […]

This is a written response discussion board, so you will type in your response. For this discussion board post, do one of the following: Define mean, median, and mode and then provide an example of when you would use each. Make sure you explain why you would use that measure of central tendency for each […]

Please answer all the question attached and answer questions in the attached file not all of them in the same file. Please look at all the attachments!!!

. A group of 9 executives of a certain firm include 4 who are married, 3 who never married, and 2 who are divorced. Three of the executives are to be selected for promotion. Let X denote the number of married executives and Y the number of never married executives among the 3 selected for […]

Roll a pair of unbiased dice. If X denotes the smaller and Y denotes the larger outcome on the dice, then what is the joint probability density function of X and Y ?

Use statistical software to create, interpret, and analyze two histograms in a Word document. Collapse All Introduction Exploring the associations between some variables in the courseroom using correlations might provide some important information about learner success. You’ll need to pay attention to both magnitude, which is the strength of the association, and directionality, which is […]

Part 1 A principal wants to determine if a new ACT preparation program is effective. The data are contained in the schools.sav data file. Open the schools.sav file in SPSS. Use SPSS to determine whether a significant improvement existed between student performance on ACT tests in 1993 (act93) and ACT tests in 1994 (act94). Assume […]

Complete a few assignments with 10 questions or less. Most of them were already completed as you would see the percentage.

Please answer all the question attached and answer each question in the attached file not all of them in the same file. Pleae look at all the attchedmenst

Find the variances, z-scores, selecting data set, calculate de median, the standard deviation, create a histogram, anothers