What type of association and correlation are shown by the scatterplot ?

linear association , positive correlation.

Step-by-step explanation:

We say a scatter-plot show a linear association if the points are scattered about a straight line .

From the given graph, it can be seen that there is a linear association as the  points are scattered about a straight line .

Also it is a positive correlation as the points are moving upwards diagonally (from left to right) which shows if one variable increases then other also increases.

11) obtuse

13)right

15) acute