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Statistics
Statistics deals with collecting, organizing, and interpreting numerical data. An important aspect of statistics is the analysis of population characteristics inferred from sampling.
36,755 Questions
What is a variation that is the relationship between two variable quantities with a constant ratio?
Direct variation.
How many pigs does Chile have?
As of recent data, Chile has approximately 1.5 million pigs. The country's pig farming industry is significant, contributing to both domestic consumption and exports. The sector has grown in recent years, driven by increasing demand for pork products. For the most accurate and current figures, it's advisable to consult official agricultural statistics or reports.
What are some ways to find out a population size?
One way is what is called a "Mark-Recapture" a study on how large the population is.
Please see related link below!
What are all of the possible 4 digit numeric combinations using 3-6?
If it could be 3333, then your answer would be four to the fourth power, which is 256.
Can prove that as: The first number has 4 possibilities, and the second has 4 possibilities, so if each of the possibilities in the first number has four possibilities for the second number, the number of possibilities of the two is 16, and that can continue if the third number as four possibilities, so you can have 64 combination of those three numbers, and of those 64 numbers each of them could have 4 different numbers after them, so you have 256 combinations.
If it could not repeat digits it would be 4x3x2x1 which is 24.
can prove that as:
1.3456
2.3465
3.3546
4.3564
5.3645
6.3654
7.4356
8.4365
9.4536
10.4563
11.3635
12.4653
13.5346
14.5364
15.5436
16.5463
17.5643
18.5634
19.6345
20.6354
21.6435
22.6453
23.6534
24.6543
Explain the difference between quality and grade?
Grade talks about the Characteristics and features of a product high grade of car is one that has lots of features and benefits. while Quality talks about the degree that the inherent characteristics of a product fulfill its requirements. Thus, a high Grade product can have a low quality and vice versa. Quality talks about the durability of a product while Grade talks about the fancifulness of the product.
Let's use the Telecoms industry as the example especially in Nigeria. During the advent of GSM, there were two popular phones - Samsung R220 (Blue Eye) and Nokia 3310. Samsung R220 was a phone with different functions and features. Many people loved to have one (High Grade) but Nokia 3310 did not have much features but was stronger and durable (High Quality). So, we can say that Nokia was low grade with high quality while the Samsung was high grade but low quality.
The probability of getting a red card out of a standard 52 card deck is 26 in 52, or 0.5. The probability of getting a second red card is 25 in 51, or 0.490, because one red card is missing, and the deck is short by one card. The probability of getting a black card next is 26 in 50, or 0.52, because the deck is short by two cards, but all the black cards are there. Multiply these probabilities together, and you get about 0.127, or about 1 in 8, so the probability of getting 2 red cards and then a black card in a random 52 card deck is about 1 in 8.
What is the variable plotted on the horizontal or x-axis called?
it is an unusual variable called the protocathletica variable.
How many ways can you get a sum of 11 when 2 dice are thrown?
There are just two ways to get the value of 11 when dice are thrown. one would be a 5 and 6 and the other is a 6 and 5.
How can finding out that a hypothesis is not true be useful for a scientist?
So they know not to make the same mistake again
The number 2 appears how many times between 1 and 300?
160, if you count 222 as 3 occurances.
Basically, it comes up in the ones place 10 times in each set of 100. (2,12,22,32...)
And 10 times in the tens place. (20, 21, 22, 23...)
That's 20 times in any set of 100, so 60 times for 1-300.
Then 100 more to represent the hundreds place (200, 201, ...)
What is best Interquartile range or Median absolute deviation?
The answer depends on the purpose. The interquartile range and the median absolute deviation are both measures of spread. The IQR is quick and easy to find whereas the MAD is not.
What 9 numbers have a a median of 5 but not a mean of 5?
Here is an example.
1,1,2,3,5,6,6,7,10
The median is the middle-most observation and equal to 5.
The mean is the average = 41/9 = 4.56
What are the uses of statistics in the educational sector?
1) Measuring student and/or teacher performance.
2) Comparing results of different schools, curricula or ethnic (SES) groups.
3) Measuring rates of student drop-out, violence, success after high school (comparing high school grades to subsequent grades in university).
What is the smallest number that can be formed using the digits 2 and 7?
Using a decimal point, it would be .27 (normally written as 0.27).
This is somewhat smaller than 2/7 (which is about 0.286).
* * * * *
Why not -27 which is -128?
What are the odds of getting a sum divisible by four by rolling 2 dice?
When rolling 2 dice there are 36 combinations that can occur.
Sums will range from 2 to 12; sums divided by 4 are 4, 8, and 12
You can get this by dice combinations of
1 3
3 1
2 2
4 4
2 6
6 2
3 5
5 3
6 6
That is 9 ways. so odds are 9/36 = 1 in 4
How many ways 3 students can sit in 3 chairs?
The first student has 3 chairs to choose from. Once he has mad the choice, the second student has 2 chairs to choose from. And the last student only has 1 choice, so 3 x 2 x 1 = 6 ways.
Here are the six ways. For ease, call the students A, B, and C:
- ABC
- ACB
- BAC
- BCA
- CAB
- CBA
