Box Plot (1 Viewer)

[Kutay]

Hey i was wondering what you need to write if you have drawn a box plot and then it says to "COMMENT ON THE BOX PLOT"

what needs to be said?

 

[Dr_Doom]

Like is there a cluster. Is it spread out evenly or all bunched up.

 

[PC]

1. You can talk about Symmetry. If it's not completely symmetrical then it is skewed. If there is a long whisker off on the left, then it's negatively skewed. If there is a long whisker off on the right, then it's positively skewed.

2. You can talk about Spread. Remember that the first whisker represents 25% of all scores, the left part of the box is 25%, the right part of the box is 25% and the other whisker is 25%. If the box is small, then you've got a clustered group of scores. If it's wide then there's a larger spread.

3. When comparing data sets, you can compare the positions of the medians and the inter-quartile ranges.

Hope this helps!

 

[redruM]

1. You can talk about Symmetry. If it's not completely symmetrical then it is skewed. If there is a long whisker off on the left, then it's negatively skewed. If there is a long whisker off on the right, then it's positively skewed.

2. You can talk about Spread. Remember that the first whisker represents 25% of all scores, the left part of the box is 25%, the right part of the box is 25% and the other whisker is 25%. If the box is small, then you've got a clustered group of scores. If it's wide then there's a larger spread.

3. When comparing data sets, you can compare the positions of the medians and the inter-quartile ranges.

Hope this helps!

Thats about all.

Perhaps, make a note about outliers.

Also you can compare the differences between the median and mean, and relate that to PC's (1), ie the skewness.

 

[Kutay]

1. You can talk about Symmetry. If it's not completely symmetrical then it is skewed. If there is a long whisker off on the left, then it's negatively skewed. If there is a long whisker off on the right, then it's positively skewed.

2. You can talk about Spread. Remember that the first whisker represents 25% of all scores, the left part of the box is 25%, the right part of the box is 25% and the other whisker is 25%. If the box is small, then you've got a clustered group of scores. If it's wide then there's a larger spread.

3. When comparing data sets, you can compare the positions of the medians and the inter-quartile ranges.

Hope this helps!

Thank you, that helped me heaps

 

[Dr_Doom]

This goes the same for all other graphs right? And they wont ask to many questions like that aye?

 

[ally147]

Its hard to tell really... Jus talk about skewness, outliers etc... that way you cover most things and you really shouldn't go wrong.

But needless to say im not great at maths but just do your best