Procedure All participants were part of a larger study conducted by Howell, Hues

Question

Procedure All participants were part of a larger study conducted by Howell, Huessy and Hassuk (1985). The original study began with 501 children in the second grade and consisted of six stages of data collection: second grade, fourth grade, fifth grade, ninth grade, 12th grade, and three years post graduation. The first three assessments were collected via the child’s current teacher, the second two assessments were collected via school records and the final assessment was an extensive interview. Due to normal attrition, the sample size was reduced to 352 children by the end of the fifth grade. The present study utilizes data collected during all six collection periods and includes only those for whom complete data is available (N = 200).

Gender (GENDER). The gender of the child was collected via a questionnaire completed by the child’s second grade teacher.

Grade Repetition (REPEAT). Whether or not the child repeated a grade during high school was assessed via school records at the end of the 12th grade.

English Level (ENGL). The level of English class the child was enrolled in was assessed via the school record in the ninth grade. The three categories were: remedial, general and college preparatory.

English Grade (ENGG). The grade the child received in English during the ninth grade was assessed via school records. Grades were: A, B, C, D, or F.

Social Adjustment Problems (SOCPROB). Whether or not the child exhibited any social adjustment problems in the ninth grade was assessed via school records. A child was considered to have a social adjustment problem if there were a least two notations in the record of infractions like disruptive classroom behavior, truancy, or setting fires in trash cans.

High School Dropout Status (DROPOUT). Whether or not the participant dropped out before completing high school was obtained from the interview conducted approximately three years post high school graduation.

ADD-like Behavior Score (ADDSC). ADD-like behavior score is the average of three scores obtained during the second, fourth and fifth grades. Each child’s current teacher was asked to complete the form. The diagnostic instrument was a 21-item questionnaire that tapped behavioral components commonly associated with ADD. Teachers rated each child on a scale from 1 (low behavior) to 5 (high behavior), where 3 indicated an “average” level of behavior. For each of the three assessments, the 21 items were summed to obtain a total score. The score used in the present study reflect an average of these three assessments. Howell et al. (1985) report high reliability (Cronbach’s alpha ranged from .93–.96 across the three assessments), and good validity for the measure.

IQ - Intelligence Quotient (IQ). IQ was assessed via a group administered Intelligence Test.

GPA - Grade Point Average (GPA). Overall high school GPA was collected from school records at the end of the 12th grade. GPA was calculated using the following scale: A=4, B=3, C=2, D=1, F=0.Participants were 200 students (55% boys, 45% girls) from one of 18 schools in northwestern Vermont. The schools were chosen in such a way to produce a reasonable cross section of rural schools within 40 miles of Burlington, Vermont. Age at first assessment, family background, racial/ethnic identity and other background variables were not assessed

Question:

Select any appropriate independent variable with three (3) or more levels and any appropriate dependent variable that I can perform ANOVA test

Explanation / Answer

to perform an anova test you need

independent variabel could be

English Level (ENGL) The three categories were: remedial, general and college preparatory.

dependent variable could be

IQ - Intelligence Quotient (IQ). IQ was assessed via a group administered Intelligence Test.

so you can formualte your hypothesis as

H0 : The average intelligent score does not differ signficantly based on English level

H1 : The average intelligent score d differ signficantly based on English level , atleast for 2 levels

Please remember that anova is an omnibus test , it doesnt tell which goups are different. You must perform a post hoc analysis to conclude which groups are statistically different

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