Answer:
The mean absolute deviation (MAD) of this data set is 2.4
Step-by-step explanation:
step 1
Find the mean
To find out the mean sum all values and divide by the number of values in the data set
we have the set of data
The number of values is 10
so
The mean is equal to
step 2
Find out the absolute value of the difference of each value from that mean
so
we have
step 3
we know that
The Mean Absolute Deviation (MAD) is the mean of those distances
therefore
The mean absolute deviation (MAD) of this data set is 2.4
Answer:
465 miles
Step-by-step explanation:
From the question,
S₁ = d₁/t₁............................... Equation 1
Where S₁ = Speed travels by Perry for the first journey, d₁= First distance traveled by Perry, t₁ = First time taken.
make d₁ the subject of the equation
d₁ = S₁t₁................... Equation 2
Given; S₁ = 55 miles per hour, t₁ = 5.5 hour
Substitute these values into equation 2
d₁ = 55×5.5
d₁ = 302.5 miles.
Also,
d₂ = s₂t₂.......................... Equation 2
Given: s₂ = 65 miles per hour, t₂ = 2.5 hours.
d₂ = 65×2.5
d₂ = 162.5 miles
Hence,
Total distance = d₁+d₂
Total distance = 302.5+162.5
Total disstance = 465 miles
Answer:
yes, for the first
no for the second
Step-by-step explanation:
Given :
The scale of a model train is 1 inch to 13.5 feet.
One of the cars of the model train is 5 inches long.
To Find :
The length, in feet, of the actual car.
Solution :
It is given that scale of the model is 1 inch to 13.5 feet. It means that 1 inch in the actual scale is equal to 13.5 feet in real.
So, length of car real is :
Length = 5 × 13.5 feet
Length = 67.5 feet
Therefore, the length of the actual car is 67.5 feet.