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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.
36,756 Questions
How do you show data in a stratified random sampling problem?
Mainly graphs... Example: Bar graph, line graph, etc...
Is it possible for the median of a set of four numbers to be one of the numbers in the set?
Yes, it would be in the middle of the middle two
Should you use a line plot to compare the numbers of students signing up for different activities?
use a bar graph
Why would a teacher use the medium instead of the mean as the average for the set of test?
because when you get the medium, you have to lay the numbers-or scores, in your case- in ascending order, and then you get the middle, which is just like the average
Three particular items to look for on a chart or graph are?
Description (title) of the chart so that you know what the chart is intended to display;
Labels for categories (or independent variable), with scale, if appropriate; and
Values for dependent variable with scale.
If the hypothesis is that watching CNN causes fear of violent crime then watching CNN is the independent variable.
If the hypothesis is that the fear of violent crime is likely to induce you to watching CNN, then fear of crime is the independent variable.
What are the chances of rolling a seven with 2 dices 2 times?
If they are normal cubes, the probability is 1, if you roll them often enough.
Graphs give you a pictorial version of numerical information. For most people, it is easier to perceive changes in information through images, rather than numbers.
Does a correlation imply that one event causes the other event to occur?
Absolutely not! This is, unfortunately, a very common mistake.
For example, my age is pretty well correlated with the number of TV sets in the world. But my growing old does not make or sell TVs and the number of TVs in the world does not age me.
What is the Disadvantage of means deviation?
The disadvantage is that the mean deviation of a set of data is always zero and so does not provide any useful information.
How many decimeters are in 1.09361 yards?
There are 9.144 decimetres in one yard. Therefore, 1.09361 yards is equal to 1.09361 x 9.144 = 9.99996984 decimetres.
How does increasing the sample size affect the sample error of the mean?
It should reduce the sample error.
How do you figure out what the probability of rolling a three and then a four using a standard dice?
If you keep rolling the die, the probability is 1.
If you require a 3 and a 4 in the first two rolls, the answer is (1/6)*(1/6) = 1/36
What does it mean when someone integrates data?
Data integration is the practice of consolidating data from disparate sources into a single dataset with the ultimate goal of providing users with consistent access and delivery of data across the spectrum of subjects and structure types, and to meet the information needs of all applications and business processes.
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When You roll 1 die Find Pthe number rolled is odd?
Number of possible outcomes = 6
Number of outcomes that are odd numbers = 3
P = 3/6 = 50% .
What are the odds of having a baby born with 3 extremely rare diseases?
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