Help with 3 sections- 3 to 4 pages- statistical methods for criminal justice

UnivariateHomework2_example.docx

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Department of Criminal Justice

CRJU 4060 – Criminal Justice Statistics

Univariate Interpretations – Practice Sheet

Directions: Review the SPSS print out and answer the questions below each variable in the Frequency Table. Please note the amount of space you are given under each of these tables is not indicative of the amount you should write. You can manipulate the charts up and down after you have finished writing in your answers to save space and paper.

Frequencies

Statistics
	v60xsex Sex	v61xethn Ethnicity	v59xgrad Grade	v58xgpa GPA	SENGAGE Degree of School Engagement	GANGEXPO Exposure to Gangs	COUNTY
N	Valid	995	999	957	429	944	913	998
	Missing	4	0	42	570	55	86	1
Mean	.5095	3.0000	8.8495	3.0559	2.2373	3.2015	.5551
Median	1.0000	3.0000	9.0000	3.0000	2.0000	3.0000	1.0000
Mode	1.00	3.00	9.00	3.00	2.00	.00	1.00
Std. Deviation	.50016	.00000	1.93847	.66008	1.40852	2.97484	.49720
Minimum	.00	3.00	6.00	1.00	.00	.00	.00
Maximum	1.00	3.00	12.00	4.60	7.00	12.00	1.00

Frequency Table

v60xsex Sex
	Frequency	Percent	Valid Percent	Cumulative Percent
Valid	.00 female	488	48.8	49.0	49.0
	1.00 males	507	50.8	51.0	100.0
	Total	995	99.6	100.0
Missing	System	4	.4
Total	999	100.0

1. What level of measurement is this? _______nominal____________________________

2. What is your evidence? ___________categorical and not ranked__________________________________

3. Interpret the data using all appropriate information (Hint: look at your quick reference guide for interpretations to help you).

As it relates to sex, the mode is 1, which is the male category Males are 51% (n=507) of the sample. Although males are majority of the sample, females represent 49% (n=488).

v59xgrad Grade
	Frequency	Percent	Valid Percent	Cumulative Percent
Valid	6.00 6th grade	142	14.2	14.8	14.8
	7.00 7th grade	140	14.0	14.6	29.5
	8.00 8th grade	152	15.2	15.9	45.4
	9.00 9th grade	154	15.4	16.1	61.4
	10.00 10th grade	134	13.4	14.0	75.4
	11.00 11th grade	125	12.5	13.1	88.5
	12.00 12th grade	110	11.0	11.5	100.0
	Total	957	95.8	100.0
Missing	System	42	4.2
Total	999	100.0

1. What level of measurement is this? ________ordinal___________________________

2. What is your evidence? _____________Categorical and ranked________________________________

3. Interpret the data using all appropriate information (Hint: look at your quick reference guide for interpretations to help you).

As it relates to grade in school, the median category is 9, which represents the 9th grade. Looking at the valid percent distribution, middle school represents about 45% (n=434) of the sample. On the other hand, high schoolers represent majority of the respondents (n=523).

v58xgpa GPA
	Frequency	Percent	Valid Percent	Cumulative Percent
Valid	1.00	2	.2	.5	.5
	1.20	2	.2	.5	.9
	1.30	3	.3	.7	1.6
	1.40	1	.1	.2	1.9
	1.50	3	.3	.7	2.6
	1.56	1	.1	.2	2.8
	1.60	2	.2	.5	3.3
	1.70	1	.1	.2	3.5
	1.80	4	.4	.9	4.4
	1.90	2	.2	.5	4.9
	2.00	20	2.0	4.7	9.6
	2.10	3	.3	.7	10.3
	2.20	4	.4	.9	11.2
	2.30	10	1.0	2.3	13.5
	2.40	3	.3	.7	14.2
	2.50	35	3.5	8.2	22.4
	2.60	13	1.3	3.0	25.4
	2.70	8	.8	1.9	27.3
	2.75	1	.1	.2	27.5
	2.80	23	2.3	5.4	32.9
	2.90	19	1.9	4.4	37.3
	3.00	60	6.0	14.0	51.3
	3.08	1	.1	.2	51.5
	3.10	18	1.8	4.2	55.7
	3.20	27	2.7	6.3	62.0
	3.30	15	1.5	3.5	65.5
	3.40	10	1.0	2.3	67.8
	3.50	44	4.4	10.3	78.1
	3.60	12	1.2	2.8	80.9
	3.70	15	1.5	3.5	84.4
	3.80	22	2.2	5.1	89.5
	3.90	13	1.3	3.0	92.5
	4.00	17	1.7	4.0	96.5
	4.10	2	.2	.5	97.0
	4.20	4	.4	.9	97.9
	4.30	1	.1	.2	98.1
	4.40	3	.3	.7	98.8
	4.50	4	.4	.9	99.8
	4.60	1	.1	.2	100.0
	Total	429	42.9	100.0
Missing	System	570	57.1
Total	999	100.0

1. What level of measurement is this? _________interval__________________________

2. What is your evidence? _____the distribution is numeric with no true 0_________________________________

3. Interpret the data using all appropriate information (Hint: look at your quick reference guide for interpretations to help you).

As it relates to GPA, the mean is 3.05(SD+.660), this indicates the average student has a B average. The minimum of the distribution is 1.0, which represents a D and the maximum score of the distribution is 4.60, which represents an A+. Looking at the valid percent distribution, it shows that majority of the respondents are between a 2.5 and 3.5 GPA.

SENGAGE Degree of School Engagement
	Frequency	Percent	Valid Percent	Cumulative Percent
Valid	.00	104	10.4	11.0	11.0
	1.00	194	19.4	20.6	31.6
	2.00	262	26.2	27.8	59.3
	3.00	211	21.1	22.4	81.7
	4.00	127	12.7	13.5	95.1
	5.00	33	3.3	3.5	98.6
	6.00	3	.3	.3	98.9
	7.00	10	1.0	1.1	100.0
	Total	944	94.5	100.0
Missing	System	55	5.5
Total	999	100.0

Note: The lower the value the more the student is engaged in school.

1. What level of measurement is this? _________ratio__________________________

2. What is your evidence? __________the distribution is numeric with a true 0__________________________

3. Interpret the data using all appropriate information (Hint: look at your quick reference guide for interpretations to help you).

As it relates to student engagement, the mean is 2.23 (SD=1.41), which indicates on average student engagement is high. The minimum score on the distribution is 0, which represents high student engagement. The maximum score on the distribution is 7, which indicates very low student engagement. Overall the valid percent distribution shows that majority of the students in the sample are highly engaged.

GANGEXPO Exposure to Gangs
	Frequency	Percent	Valid Percent	Cumulative Percent
Valid	.00	221	22.1	24.2	24.2
	1.00	100	10.0	11.0	35.2
	2.00	88	8.8	9.6	44.8
	3.00	149	14.9	16.3	61.1
	4.00	114	11.4	12.5	73.6
	5.00	75	7.5	8.2	81.8
	6.00	43	4.3	4.7	86.5
	7.00	29	2.9	3.2	89.7
	8.00	28	2.8	3.1	92.8
	9.00	21	2.1	2.3	95.1
	10.00	15	1.5	1.6	96.7
	11.00	15	1.5	1.6	98.4
	12.00	15	1.5	1.6	100.0
	Total	913	91.4	100.0
Missing	System	86	8.6
Total	999	100.0

Note: The higher the value the more exposed to gangs.

1. What level of measurement is this? _________ratio__________________________

2. What is your evidence? __________the distribution is numeric with a true 0__________________________

3. Interpret the data using all appropriate information (Hint: look at your quick reference guide for interpretations to help you).

As it relates to gang exposure, the mean is 3.2 (SD=2.97), which indicates on average student have low exposure to gangs. The minimum score on the distribution is 0, which represents low gang exposure. The maximum score on the distribution is 12, which represents high exposure to gangs. Overall the valid percent distribution shows that majority of the students in the sample have low exposure to gangs.

COUNTY
	Frequency	Percent	Valid Percent	Cumulative Percent
Valid	.00	444	44.4	44.5	44.5
	1.00	554	55.5	55.5	100.0
	Total	998	99.9	100.0
Missing	System	1	.1
Total	999	100.0

Note: 0= the respondent resides outside of the county and 1= the respondents resides inside the county.

1. What level of measurement is this? ________nominal___________________________

2. What is your evidence? ___________categorical and not ranked__________________________________

3. Interpret the data using all appropriate information (Hint: look at your quick reference guide for interpretations to help you).

As it relates to county, the mode is 1, which represents individuals who live in the county. Those who live in the county represent about 56% (n=554) of the sample. Overall majority of the respondents live in the county with about 45% (n=444) who live outside the county.