# Tagged Questions

The sum of several numbers divided by their count nicely summarizes the overall size of the numbers involved in a single value.

16 views

### Quantitative Aptitude Average [on hold]

The average weight of a group of boys and girl is $38$ kg. The average weight of boys is $42$ kg and that of girls is $33$ Kg. If the number of boys is 25, then the number of girls is?
10 views

### Does Averaging the score from correlation across multiple variables yield a more accurate correlation score?

This may be a beginner question but I am making a application which I using to do correlation research to be used in financial markets. The application pulls in different data sources and compares ...
444 views

### Find the average value of the function…

Find the average value of the function $$F(x) = \int_x^1 \sin(t^2) \, dt$$ on $[0,1]$. I know the average value of a function $f(x)$ on $[a,b]$ is $f_\text{avg}=\dfrac1{b-a} \int_a^b f(x) \, dx$, ...
29 views

### What are greatest and least average values? [closed]

I'm working on a school assignment in which I've a series and I've to compute these two values, but I can not find the meaning of these terms. I tried searching online resources but wasn't able to ...
34 views

### Describe the behavior of the average temperature difference of Earth as a function of time. [closed]

So I am having trouble with this question for my ENVS class. I am not sure what type of formula to use or where to start, in no way or form does my professor give an example in our notes. Here is the ...
149 views

### Removing my averages

thanks for your time and apologies if this is far too simple for this group. I am trying to remove my average from a total average. Meaning: The total average for a subset of data is 55. I am 29% ...
22 views

### Aproximation for the variance (sum)

Given that we know The mean of a population $\tilde W(t) = \sum_{i=1}^{n}f_{i}(t)*W_{i}$ The variance of the population in the previous step $Var(0) = \sum_{i=1}^{n}f_{i}(0)*(W_{i}-\tilde W(0) )$ ...
19 views

### Find upper bound from average value

I have been give a function, its average value, and the lower bound of an interval, I am trying to find the upper bound but I am a bit lost on how to do that. Here is what I have so far:  f(x)= \...
20 views

### How do I obtain the “final” standard deviation from a series of values containing individual (also null) SD values?

I have a list of values, say: ...
11 views

9 views

### Average discount give for product line

I have been out of school for entirely too long to remember how to build this equation. I am trying to calculate the average discount given for our entire product line, that is sold over 4 distinct ...