Answer:
X = -6/4
X = -3/2
Step-by-step explanation:
1/4 +x = -5/4
To solve for X, make it the subject of the equation by subtracting 1/4 on both sides
1/4 -1/4 +x = -5/4 - 1/4
x =(-5-1) /4
<u>x = -6/4</u>
If simplified, <u>X = -3/2</u>
Answer:
y = -4x + 10
Step-by-step explanation:
The proper formula is:
y = mx + b
Answer: 2
Step-by-step explanation:
8/2 = 4
4/2 = 2
Answer:
Step-by-step explanation:
Given the dataset 147, 154, 156, 161, 162,
Mean is the sum of the dataset divided by the total number of dataset.
a) Mean = 

b) The formula for calculating the deviation from the mean for each value is expressed as
where;
Xi is value of each item
xbar is the mean = 156
Mean deviation of 147 = 147-156 = -9
Mean deviation of 154 = 154-156 = -2
Mean deviation of 156 = 156-156 = 0
Mean deviation of 161 = 161-156 = 5
Mean deviation of 162 = 162-156 = 6
c) Sum of the deviations
= (-9-2+0+5+6)
= -11+11
= 0
<em>Hence the sum of deviation from the mean is 0</em>