It is possible to draw approximate conclusions about processes that take place over time when using cross-sectional data by -
- logical inferences when the time order of events
- asking individuals to provide information on variables is clear
- examining data inside of age groups from their past
<h3>What is cross-sectional
data?</h3>
Cross-sectional data are observations of multiple individuals (subjects, things) at the same time, with each observation relating to a distinct individual.
Some key features regarding the cross-sectional data are-
- Cross-sectional data is data that is gathered from all individuals at the same time.
- During cross-sectional research, time also isn't considered a study variable.
- However, it is also true that in a cross-sectional study, not all participants provide data at the same time.
- Participants' cross-sectional data is collected in a shorter time frame. This time period is also referred to as the field period.
- Time only causes a variation in the results; it is not biased.
- The annual gross income for each of the 1000 randomly selected families in New York City in 2000 is a simple instance of cross-sectional data.
- Cross-sectional data differs from longitudinal data, which involves multiple observational data for each unit over time.
To know more about cross-sectional data, here
brainly.com/question/14827117
#SPJ4
Check the picture below, notice the whole at 5, meaning that value is not included in the set.
Answer:
The solution is x = -2 and y = 2.
Step-by-step explanation:
Given that:
14y - 8x = 44 Eqn 1
-7y = -x - 16 Eqn 2
In elimination method, you try to eliminate one variable in the equation by adding or subtracting.
Multiplying Eqn 2 by 2
2(-7y = -x - 16)
-14y=-2x-32
-14y+2x= -32 Eqn 3
Adding Eqn 1 and 3
(14y-8x)+(-14y+2x)=44+(-32)
14y-8x-14y+2x=44-32
-6x=12
Dividing both sides by -6
![\frac{-6x}{-6}=\frac{12}{-6}\\x=-2](https://tex.z-dn.net/?f=%5Cfrac%7B-6x%7D%7B-6%7D%3D%5Cfrac%7B12%7D%7B-6%7D%5C%5Cx%3D-2)
Putting x=-2 in Eqn 2
-7y=-(-2)-16
-7y=2-16
-7y=-14
Dividing both sides by -7
![\frac{-7y}{-7}=\frac{-14}{-7}\\y=2](https://tex.z-dn.net/?f=%5Cfrac%7B-7y%7D%7B-7%7D%3D%5Cfrac%7B-14%7D%7B-7%7D%5C%5Cy%3D2)
Hence,
The solution is x = -2 and y = 2.
First, let's find the equivalent of 1 meter to each of the US Standard choices (inches, feet, yards, miles).
1 meter = 39.37 inches = 3.28 feet = 1.09 yards = 0.00062 miles
Now, to find the metric equivalent of each of the choices, we multiply each of these by 4 (since we need to find a measurement equivalent to 4 meters), and check them against the choices.
A. 0.28 miles.
0.00062 x 4 = 0.0025
0.0025 is much smaller than 0.28, so that won't work.
B. 4.38 yards
1.09 x 4 = 4.36
4.36 is 0.02 smaller than 4.38, so it's pretty darn close.
C. 12.4 feet
3.28 x 4 = 13.12
13.12 is slightly bigger than 12.4, but it's not as close as in B.
D. 136.2 inches
39.37 x 4 = 157.48
157.48 is considerably bigger than 136.2, so that doesn't work, either.
The two that are closest are B and C, but B is closer by far.
If you round to the nearest tenth, 4.36 becomes 4.4, and 4.38 becomes 4.4
This means that B, 4.38 yards, is as equivalent a measurement as you're going to get with these choices.
Therefore the answer is B: 4.38 yards.