# In any distribution is the sum of the squared deviations from the mean always equal to zero?

No. It cannot be. Remember that when you square a negative number it becomes a positive number. Thus all squared deviations are positive and their sum must be positive.

### An odd number when squared equals to an even number?

An odd number squared would always equal an odd number and an even number squared would always equal an even

### Are the mean and the median always equal?

No. They are equal only if the distribution is symmetrical.

### Are right triangles called equilateral?

No, because the hyponenuse is always longer than the legs, so they are not equal, a squared + b squared = c squared

### What is -1 squared equal to and why?

it equals positive one. one squared is always one. if they're both negative, negative times negative is always positive.

### What are the Theoretical properties of normal distribution?

-It is symmetrical (mean = median) -It is bell shaped (empirical rule applies) -The interquartile range equals 1.33 standard deviations -The range is appr. equal to 6 stand. dev.

### Is a square meter equals to a meter squared?

yes......... a metre square is always equal to square metred

### Is the sum of deviations from the mean equal to zero in symmetrical distributions?

It is equal to zero in ALL distributions.

### What was pythogoream theorem state?

It states that in a right triangle, the longest side of the triangle squared is equal to the sum of the remaining two sides squared. The formula used for this is a²+b²=c². C is always equal to the longest side of the triangle, while A and B are equal to the two shorter sides of the triangle.

### Under the normal curve if the mean of the distribution of raw scores is equal to 68 then its equivalent z score is equal to?

The z score for the mean is always 0.

### Why is -2 squared equal plus 4?

A negative times a negative is always positive. To see why this is, see the link below.

### What is the use of statistical mean in industry?

For different sets of data, the mean would be the summation of all observations, which are normally subdivided by the observation numbers. The mean value would frequently be quoted with standard deviations: mean would describe data central locations then standard deviations illustrate the spread. Substitute dispersion measures include mean variations that are always equal to average absolute deviations from the mean values. It is minimally responsive to the outliers. Hope this helps.

### Does -3 squared equal -9?

No, it equals positive 9. Any negative number squared will always give a positive result; the square root of a negative number is always imaginary (a mathematical term, referring to 'i'). So, (-3)2 = 9 and -32 = -9.

### What is a statement in geometry that can be proved?

a squared plus b squared is equal to c squared

### What is -2 to the Second Power equal?

-2 squared will be 4. Remember that two negative numbers multiplied will always result in a positive answer. Therefore, any number squared will be positive (except 0 where the result will be 0).

### Does -12 to the second equal -144?

No. Two negatives multiplied together or a negative number that is squared always equals a positive number. So it would equal 144 not -144

### What is equal distribution of wealth in economics?

Equal distribution of wealth is associated with the ideas of Communism and Socialism.

### Does 1 meter squared equal 1000 millimeters squared?

(1 metre) squared = (1000 mm) squared = 1000000 mm squared.

### What is cosine squared theta equal to'?

NO!! Cosine squared theta = 1 - Sine squared theta, not plus.

### Which distribution function has equal mean and variance?

The exponential distribution and the Poisson distribution.

### Does x squared plus x plus 41 always equal a prime number?

No. it's not a prime number when x = 40, 41, 81,82 ...

### What is 1 squared radical 40 plus 3 squared radical 10 equal?

1 squared radical 40 is equal to 1 squared radical (4 x 10), and this become 2 squared radical 10. By adding 2 squared radical10 with 3 squared radical 10 we get 5 squared radical 10.

### What does 3 squared times 5 squared equal?

3 squared is 9, 5 squared is 25. So the product is 225.

### Why are there so many ways to prove the pythagorean theorem?

Because in a right angle triangle the square of its hypotenuse is always equal to the sum of each side squared.

### What is the relationship among the mean median and mode in a symmetric distribution?

They are all equal . . . they are the same. (In an asymmetric distribution they are not equal.)

### What is the sum of proportions computed from a frequency distribution have to equal?

The sum of proportions computed from a frequency distribution must equal

### What does 9 squared equal?

When a number is squared, it means that it is that number is multiplied by itself. So in this case it would be 9x9 which is equal to 81.

### Explain a squared plus b squared equal c squared?

The hypotenuse of a right angle triangle when squared is equal to the base squared plus the height squared and the formula is usually given as:- a2+b2 = c2 whereas a and b are the base and height respectively and c being the hypotenuse which is the largest side