A) ABCD is a square
.........
The standard deviation of the data set is D. ABOUT 13.4
14, 34, 23, 50, 25, 16, 48
Arrange in ascending order: 14, 16, 23, 25, 34, 48, 50
mean = (14 + 16 + 23 + 25 + 34 + 48 + 50) / 7 = 210/7 = 30
|14 - 30| = 16 ⇒ 16² = 256
|16 - 30| = 14 ⇒ 14² = 196
|23 - 30| = 7 ⇒ 7² = 49
|25 - 30| = 5 ⇒ 5² = 25
|34 - 30| = 4 ⇒ 4² = 16
|48 - 30| = 18 ⇒ 18² = 324
|50 - 30| = 20 ⇒ 20² = 400
(256 + 196 + 49 + 25 + 16 + 324 + 400) / 7 = 1,266/7 = 180.85 variance
√180.85 = 13.45 standard deviation.
Answer:
The rule in what is shown to be a graph and a in-out machine is:
y = 2x + 5
Step-by-step explanation:
2(5) + 5 = 15
10 + 5 = 15
15 = 15
TRUE RULE
2(7) + 5 = 19
14 + 5 = 19
19 = 19
TRUE RULE
2(8) + 5 = 21
16 + 5 = 21
21 = 21
TRUE RULE
y = 2x + 5 is your rule!
I think it is c. Hope this helps!