Mode is the value that appears most often in a set of data, so you can have more than one mode. For example in the set of numbers 1, 1, 2, 2, 3, 4, 5 both 1 and 2 would be the mode.

Add c to both sides, then subtract a to get c = b - a.

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Correct

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Correct!

Wrong!

The median is the one in the middle when you arrange a set of numbers in order. In this case there are eight in total, so the median is half way between the 4th and 5th numbers in the set.

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x = 3, 4, 5, 6, 7, etc.

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x = 2, 3, 4, 5, 6, etc.

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x = 2, 1, 0, -1, -2, etc.

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Wrong!

â‰¥ means greater than or equal to, so the sequence starts at 2 and goes up.

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Add the indices: 2 + 3 = 5.

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Weak positive correlation.

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Strong positive correlation.

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Strong negative correlation.

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Wrong!

I mean it's basically a straight line.

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Weak positive correlation.

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Weak negative correlation.

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No correlation.

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Wrong!

You couldn't draw a line to fit these points, so no correlation.