What does first difference mean?

Mathematics

2 answers:

FromTheMoon [43]3 years ago

6 0

Hope I am giving you the answer which you need

Sunny_sXe [5.5K]3 years ago

4 0

Answer:

In statistics and econometrics, the first-difference (FD) estimator is an estimator used to address the problem of omitted variables with panel data. It is consistent under the assumptions of the fixed effects model. In certain situations it can be more efficient than the standard fixed effects (or "within") estimator.

First differences are the differences between consecutive y-‐values in tables of values with evenly spaced x-‐values. If the first differences of a relation are constant, the relation is _______________________________ If the first differences of a relation are not constant, the relation is ___________________________

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HELP NEEDED ASAP!!! HELP IS MUCH APPRECIATED

spin [16.1K]

There all wrong though ? how could the others be like that but the answer choices way off

7 0

3 years ago

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.

nadya68 [22]

Answer: you can use a muscle called the brain

Step-by-step explanation: but I think that 2+2=4 I think that’s correct and thanks for the points.

I’m sorry but I actually don’t know

3 0

3 years ago

While conducting experiments, a marine biologist selects water depths from a uniformly distributed collection that vary between

mr_godi [17]

Answer: The expected value of the water depth is 4.5 m.

Step-by-step explanation:

Let x be a random variable which is uniformly distributed in interval [a,b] .

Then the mean of the distribution is ghiven by :-

$E(x)=\dfrac{a+b}{2}$

Given : While conducting experiments, a marine biologist selects water depths from a uniformly distributed collection that vary between 2.00 m and 7.00 m.

Then, the expected value of the water depth = $\dfrac{2+7}{2}=\dfrac{9}{2}=4.5$