WEEK SIX ASSIGNMENT MHA 610

braindata.txt

IQ	ORDER	PAIR	SEX	CCSA	HC	TOTSA	TOTVOL	WEIGHT	log(CCSA)	log(TOTVOL)
96	1	1	2	6.08	54.7	1913.88	1005	57.607	0.784	3.002
89	2	1	2	5.73	54.2	1684.89	963	58.968	0.758	2.984
87	1	2	2	6.22	53	1902.36	1035	64.184	0.794	3.015
87	2	2	2	5.8	52.9	1860.24	1027	58.514	0.763	3.012
101	1	3	2	7.99	57.8	2264.25	1281	63.958	0.903	3.108
103	2	3	2	8.42	56.9	2216.4	1272	61.69	0.925	3.104
103	1	4	2	7.44	56.6	1866.99	1051	133.358	0.872	3.022
96	2	4	2	6.84	55.3	1850.64	1079	107.503	0.835	3.033
127	1	5	2	6.48	53.1	1743.04	1034	62.143	0.812	3.015
126	2	5	2	6.43	54.8	1709.3	1070	83.009	0.808	3.029
101	2	6	1	7.99	57.2	1689.6	1173	61.236	0.903	3.069
96	1	6	1	8.76	57.2	1806.31	1079	61.236	0.943	3.033
93	2	7	1	6.32	57.2	2136.37	1067	83.916	0.801	3.028
88	1	7	1	6.32	57.2	2018.92	1104	79.38	0.801	3.043
94	2	8	1	7.6	55.8	1966.81	1347	97.524	0.881	3.129
85	1	8	1	7.62	57.2	2154.67	1439	99.792	0.882	3.158
97	1	9	1	6.03	57.2	1767.56	1029	81.648	0.780	3.012
114	2	9	1	6.59	56.5	1827.92	1100	88.452	0.819	3.041
113	2	10	1	7.52	59.2	1773.83	1204	79.38	0.876	3.081
124	1	10	1	7.67	58.5	1971.63	1160	72.576	0.885	3.064

Correlation

Correlation Table
	CCSA	HC	TOTSA	TOTVOL	WEIGHT
CCSA	1
HC	0.6127741247	1
TOTSA	0.3371979992	0.3366736525	1
TOTVOL	0.661789131	0.5079143784	0.6009954323	1
WEIGHT	0.0816945401	0.2399805551	0.0641067141	0.2079227115	1
SCATTER PLOT

Correlation refers to a statistical measure of how to variables move in relation to each other. It is computed into a correlation coefficient that ranges between -1 and +1. A correlation of +1 will indicate perfect positive correlation where the two variables follow the same direction. On the other hand, a correlation of -1 implies perfect negative correlation where variables move in totally opposite directions. a value of 0 indicates there is no correlation. Interpretation All the variables are positively correlated ranging from 0.08(CCSA, WEIGHT) which indicates the weakest correlation to 0.66 (CCSA, HC) indicating a strong correlation between the two variables. In this case, the CCSA and HC posses the highest correlation of 0.66. This implies that there is a high relationship between the Head circumference and Corpus Callosum Surface Area.  

Scatter Plot 6.08 5.73 6.22 5.8 7.99 8.42 7.44 6.84 6.48 6.43 7.99 8.76 6.32 6.32 7.6 7.62 6.03 6.59 7.52 7.67 54.7 54.2 53 52.9 57.8 56.9 56.6 55.3 53.1 54.8 57.2 57.2 57.2 57.2 55.8 57.2 57.2 56.5 59.2 58.5

CCSA

HC

The scatter plot indicates a positive correlation evident from the trend line. The HC values are much more spread while the CCSA are less spread. The trend indicates that the values of Corpus Callosum Surface Area incerease with increase in Head Circumference.