Regression analysis, Basic Statistics

Assignment Help:

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? 


Related Discussions:- Regression analysis

Index numbers, discuss the considerations to be borne in mind when construc...

discuss the considerations to be borne in mind when constructing index numbers

Probability, Consider the two events A and B with P(A) = 0.4 and P(B) = 0.3...

Consider the two events A and B with P(A) = 0.4 and P(B) = 0.3. (a) If A and B are independent then compute the probability that Both A and B happen

Illustrate linear correlation, Q. Illustrate Linear Correlation? Ans. ...

Q. Illustrate Linear Correlation? Ans. In bivariate studies we are often interested in finding out whether there is a relationship between two sets of data. Are SAT score

STATISTICS FOR MANAGEMENT, 1. Mention the characteristics of Statistics. Ex...

1. Mention the characteristics of Statistics. Explain any two applications of Statistics. 2. Distinguish between primary and secondary data. What are the methods of collecting prim

Determine the level of consumption, Suppose an individual has a lifetime ea...

Suppose an individual has a lifetime earnings profile and expects to live for 4 Periods:             Earnings in Period 1:   $30             Earnings in Period 2:   $60

Accounting cycle, The Steven Wholesale Co. uses the periodic inventory syst...

The Steven Wholesale Co. uses the periodic inventory system. The following transactions occurred during the month of May, the last month of the fiscal year that runs from June 1 t

Pie diagram, A survey was conducted among the residents of Pune City, its s...

A survey was conducted among the residents of Pune City, its suburbs and the Pune Cantonment area. The following three pie diagrams show their respective preferences for living in

Management accounting, The Rohr Company''s old equipment for making subasse...

The Rohr Company''s old equipment for making subassemblies is worn out. The company is considering two alternatives: a) Completely replacing the old equipment with new equipment

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd