The table below shows data from a survey about the amount of time high school students spent reading and the amount of time spent watching videos each week (without reading):

readingvideo
51
54
77
710
712
1215
1215
1218
1421
1526

which response best describes outliers in these data sets?
neither data set has suspected outliers.
the range of data is too small to identify outliers.
video has a suspected outlier in the 26-hour value.
due to the narrow range of reading compared to video, the video values of 18, 21, and 26 are all possible outliers.

3. parallelogram

step-by-step explanation:

we turn each of our sides into direction vectors

ab=b-a=(3 - 7, 1 - 0) = (-4, 1)

bc=c-b=(1,6)

cd=d-c=(4,-1)

da=a-d=(-1,-6)

we see how the opposite sides have negated direction vectors; this is characteristic of a parallelogram.   we have congruent sides ab=cd and bc=da with unequal lengths because 1^2+6^2 is different from (-4)^2+1^2.   so it's not a square or a rhombus.  

we check the dot product of direction vectors of adjacent sides.   we have

ab dot bc = -4(1) + 1(6) = 2

that's not zero so the sides are not perpendicular.   we've ruled out rectangle.

the direction vectors indicate two pairs of congruent parallel sides, so we choose parallelogram over trapezoid.