Data Analysis Report

Data Analysis Report

Data Description

The data which is used for the analysis is the ADD dataset from Howell's textbook, which is available on course web page. In 1965, second-grade teachers in a number of schools in Vermont were asked to complete a questionnaire indicating the extent to which each student exhibited behaviors associated with attention deficit disorder (ADD).  Based on the questionnaire, an ADD “score” was computed for each student (with higher scores indicating more ADD-like behaviors).  The questionnaires for the same children were again completed when the children were in fourth and fifth grades.  The children were followed through high school, and in 1985 Howell and Huessy reported some data from this study.  The variables in the data set are as follows:

Variables in the Data

ID

ID number

ADDSC

Average of the three ADD scores

SEX

1=male; 2=female

REPEAT

1 = repeated at least one grade; 0 = did not repeat a grade

IQ

IQ obtained from a group-administered test

ENGL

Level of English in ninth grade: 1=college prep; 2=general; 3=remedial

ENGG

Grade in English in ninth grade: 4=A; 3=B; etc.

GPA

Grade point average in ninth grade

SOCPROB

Social problems in ninth grade: 1=yes; 0=no

DROPOUT

1 = dropped out before completing high school; 0 = did not drop out

Hypothesis

Null Hypothesis: There exist no relationship between the Social problem and Dropout.

Alternate Hypothesis: There exist a relationship between the social problem and dropout.

Descriptive Statistic of the Variables

Table 1 below shows the frequency distribution of social problem in ninth grades. In the sample of 88, 78 respondents don't have any social problem, only 10 of the respondents admitted any social problem. Table 2 shows that 78 respondents didn't drop out from the school before completing high school whereas 10 admitted dropping out from school before high school

socprob



Frequency

Percent

Valid Percent

Cumulative Percent

Valid

no

78

88.6

88.6

88.6



yes

10

11.4

11.4

100.0



Total

88

100.0

100.0



dropout

Frequency

Percent

Valid Percent

Cumulative Percent

Valid

didnot dropout

78

88.6

88.6

88.6



dropped out before completing high school

10

11.4

11.4

100.0



Total

88

100.0

100.0



Cross Tabulation

The crosstabulation table is the basic technique for examining the relationship between two categorical variables, possibly controlling for additional variables.

The Crosstabs procedure offers tests of independence and measures of association and agreement data. Additionally, you can obtain estimates of the relative risk of an event given the presence or absence of a particular characteristic.

socprob * dropout Crosstabulation

Count

dropout

Total



didnot dropout

dropped out before completing high school

socprob

no

73

5

78



yes

5

5

10

Total

78

10

88

From the cross tabulation it can be seen that out of 10 respondents who admitted dropping out before completing high school, 5 of them had social problem in the ninth grade while 5 didn't ...