Regression analysis, Basic Statistics

Data was gathered on a group of ninth grade students. Some students have been diagnosed with a learning disability.  All students were measured on conduct, attention, hyperactivity, CPT, and FCAT math & verbal

1.  Using "gender" as your independent variable and "conduct" as your dependent variable:

a.  State the null hypotheses two-tailed.

b.  State the alternative hypotheses two-tailed.

c.  Test your hypothesis using the Independent Samples T Test procedure. (copy and paste group statistics).

d. Are the variances assumed to be equal?

e.  Write a conclusion detailing the results (in APA style).

2  The researchers would like to take the sample of 48 students and recode them into two different groups based on their hyperactivity index scores. (HYPINDX).

  1. Recode the "HYPINDX" variable into a different variable "HYPGROUP" so that children with a HYPINDX score greater than or equal to 60 are designated as "1" which will be labeled "HYPER".
  2. Recode also so that children with a HYPINDX score less than or equal to 59 are designated as "2" which will be labeled "NON_HYPER".

(a)  Create a pie chart for your new variable. Make sure the groups are properly labeled.       

3.  Using your new variable "HYPGROUP" as an independent variable and "CPT" as your dependent variable perform the following analysis. (CPT is a computerized measure of continuous performance during a Go/No-go task.

a. State the null hypotheses two-tailed.

b. State the alternative hypotheses two-tailed.

c. Test your hypotheses using the Independent samples T Test procedure. (copy and paste group statistics).

d. Can equal variances be assumed?

e. Write a conclusion detailing the results (in APA style).

4. Compute an average FCAT score which is the mean of FCATV (verbal) and FCATM (math) into a new variable called "FCATAVG". Copy and paste a histogram with normalized curve.

5. Perform a regression analysis. The question is which variable "CPTscore, conduct, or inattentiveness" best predicts the average FCAT score which you computed in question # 4?

6. If conduct was measured again at the end of the semester, and you wanted to compare the two scores, what type of statistical test would you use? 

Posted Date: 2/25/2013 1:12:45 AM | Location : United States







Related Discussions:- Regression analysis, Assignment Help, Ask Question on Regression analysis, Get Answer, Expert's Help, Regression analysis Discussions

Write discussion on Regression analysis
Your posts are moderated
Related Questions
A study of long term phone calls made from general electricss corporate headquarters in fairfeild, conneticuit, revealed the length of the calls, in minutes follows the normal prob

What are the steps in a recruitment process and who are responsible for each step?

A cognitive psychologists knows that concrete words, which easily evoke images (.e.g. "sunset", "truck") are easier to remember than abstract words, but she would like to know if t

How can costs be classified by objective?

What do you mean by Purchase Return? Give an example. Ans.  Sometime the goods an organization orders are not up to the mark and they are not supposed to keep or accept so th

When are expenses credited? While common journal cost records are typically debited and have debit account balances, there are times when the cost records are acknowledged.

Mention the characteristics of Statistics. Explain any two applications of Statistics

Data Analysis: A qualitative survey was conducted in order to understand the impact of international accounting standards. To start with, a secondary research was done to unders

Ask question #Midifferentiate between sample and populationnimum 100 words accepted#

Q1 Choose the option that is closest to the exact value of the probability P (30 ≤ X  Q2 Choose the option that is closest to the approximate value of the probability P