Question

Create your own data set with correlation being about 0.75

Create your own data set with correlation being about -0.89. What does it mean?

Answer 1

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1.

We have X and Y variables in the dataset which have a corrrelation of 0.75

X	Y
123	112
178	214
116	156
119	123
125	114
154	222
140	168
104	165
164	234
152	143
150	170
158	201
168	267

This correlation is positive, which means that if X increases, Y increases. If X decreases, Y will decrease. Please note that correlation doesn't imply causality

2.

We have X and Y variables in the dataset which have a corrrelation of -0.89

X	Y
156	23
231	12
47	156
24	167
134	101
8	305
45	168
45	203
5	289
2	343
34	201
43	187
45	250

It means that the correlation is negative, i.e. if X increases, Y decreases. Also, a correlation of -.89 means it is a linear correlation of good strength. Correlation doesn't imply causality