Answer:
y = -2
Step-by-step explanation:
See the attached image in the attachment. When x is zero, it intersects the y-axis at y = -2
100% - 70
---------------------
30% - x
Mean = 151
MAD = 9.14
Given the data:
135, 160, 145, 155, 170, 150, 142
Mean = Σx / n
Mean = 1057 / 7
Mean absolute DEVIATION (MAD) : Σ(x - μ) / n
[(135-151) + (160-151) + (145-151) + (155-151) + (170-151) + (150-151) + (142-151)] / 7
Mean absolute deviation = 9.14
