Answer:
The oceanic crust is formed by partial melting of the mantle at mid-ocean ridges. The continental crust is formed even more cycles of partial melting over time, resulting less dense rocks.
Explanation:
The mantle, oceanic crust, and continental crust all have different compositions due to a process called partial melting.
This is where you start to melt a rock, but don´t melt it all the way.
When you partially melt a rock, certain chemical elements tend to stay in the solid rock while others tend to go into the melted part.
As a result, the rock that forms from that melt is less dense than the original rock.
If you then partially melt that rock, you get a rock that is even lighter.
Answer:
(b) The interquartile range of B is greater than the interquartile range of A.
(d) The median of A is the same as the median of B.
Explanation:
Given
So:
Required
Select all true statements
(a) & (d) Median Comparisons
Arrange the data:
--- average of 5th and 6th
Option (d) is correct because both have a median of: 2
(b) & (c) Interquartile Range Comparisons
First, calculate the lower quartile (Q1)
[Odd n] 
[Even n]
This means that:
Next, calculate the upper quartile (Q3)
[Odd n] 
[Even n]
This means that:
The interquartile range is 
So, we have:
(b) is true because B has a greater IQR than A
(e) This is false because some spread measures (which include quartiles and the interquartile range) changed when the 10th data is included.
The upper quartile and the interquartile range of A and B are not equal
Explanation:
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