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Q. How to Collecting and interpreting data?
Ans.
Collecting and interpreting data is the most important job of a statistician. There are many types of studies and different ways to gather information. When a statistician decides to begin a study, they must try to create a procedure that will help them find results with great accuracy. The more specific a result, the more valuable the study results are.
Before we look more deeply into good data collection techniques, there are a few terms that you should be familiar with.
Population: A collection, or set, of objects or individuals whose properties are to be investigated.
Think of a group of people, animals or objects; for example all German females between the age of 10 and 15.
Sample: A subset of a population. The sample might also be called the sample population.A sample consists of individuals or objects selected from the population. For example, a sample of all 10th grade students in the United States might be all 10th grade males in Arkansas.
Response Variable: A characteristic of interest about each element of a population or sample. The response variable is often just called the variable
3/5 of the soda purchased at the football game was cola. What percentage of the soda purchased was cola? Change the fraction to a decimal through dividing the numerator through
A graph with a positive slope shows that the variables depicted on the axes goes in the similar directions.
assuming that the earth''s sphere with a radius of 6400 km.. find the distance along a 3 degree arc at the equator of the earth''s surface?
275/41
X-intercept If an intercept crosses the x-axis we will call it as x-intercept . Y-intercept Similar, if an intercept crosses the y-axis we will call it as a y-inter
Explain Factor by Grouping ? Factoring by grouping is often a good way to factor polynomials of 4 terms or more. (Sometimes it isn't. It doesn't always work. But it's worth try
problem set d, #7
A student is allowed to select at most n-blocks from a collection of (2n + 1) books. If the total number of ways in which he can select a book is 63, find the value of n. Solution
Parallel Vectors - Applications of Scalar Multiplication This is an idea that we will see fairly a bit over the next couple of sections. Two vectors are parallel if they have
how to solve
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