A resoarcher conducts a survey asking people to report the number of hours they spend using their phones each day. The researcher conducted this survey three
times. The mean and mean absolute deviation AD) for each trial are shown below.
Trial 1
Trial 2
Trial 3
Mean
2.5 hours
3.2 hours
2.1 hours
MAD
0.5 hours
0.2 hours
0.6 hours
Based on the data, which trial was most likely biased, and why?
Trial 3 because the mean is lowest.
Trial 3 because the MAD is highest.
Trial 2 because the MAD is at least 0.3
below the MAD of each other trial, and
this is larger than the MAD of Trial 2.
D
Trial 2 because the mean is at least 0.7 away from the mean of each other
trial, and this is larger than the MAD for each other trial.

addition

step-by-step explanation:

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

answer: #1 ads up by 8 and i don't know #2

-4, -2, 1, 4

step-by-step explanation:

domain = x values

range = y values