The data to represent average test scores for a class of 16 students includes an outlier value of 91. if the outlier is included, then the mean is 80. which statement is always true about the new data when the outlier is removed?

the median would decrease.
the median would increase.
the mean would decrease.
the mean would increase.

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap