1. It is used to organize and summarize the information so that the resercher can see what happened in the research study and can communicate the results to others.
2. It helps the researcher to answer the general questions that initiated the research by determining exactly what conclusions are justified based on the results that were obtained.

1. It refers to a set of mathematical procedures for organizing summarizing, and interpreting information.

1. Define Population

1. It refered is a set of individuals selected from a population, usually intended to represent the population in a research study.

1. It is a characteristic of condition that changes or has different values for different individuals

1. It is a collection of measurements or observations

1. It is a single measurement or observation and is commomly callled a score or raw score

1. It is a value, usually a mumerical value, that describes a population.  It is usaully derived from measurements of the individuals in the population

1. It is a value, usually a mumerical value, that describes a sample.  

1. It is statistical procedures used to summarize, organize, and simplify data

1. It consist of techniques that alllow us to study samples and then make generalization about the populations from which they were selected

1. It is the discrepancy, or amount of error, that exist between a sample statistic and the corresponding population parameter

1. It generalized to the whole population and it is the same as a sampling error

1. It is when two different variables are observed to determine wheth there is a relationship between them.

1. It involves participant variable, manipulation, and control.  
2. One variable is manipulated while another variable is observed and measured.

1. It identifies a measurement procedure (a set of operations) for measuring an external behavior and uses the resulting measurements as a definition has two components.

1. this is a colection of measurements or observations

1. It is a singular measurement usauly referred to as a datum

It invovles comparing two groups of scores (like an experiment).  However, the researcher has no ability to control which participants go into which group.

It is boundaries of interval for scores that are represented on a continuous number line and is seperated by adjacent scores is located exactly halfway between the scores.  

It has two limits

As a table or graph

Example: categories that make up the original measurement scale and record or number of individuals in each category

It is a group of number within a variable

Example: x=40 to x=49 or x=41-49

the tails points toward the positve (above-zero) end of the X-axis.

[image]

It is when the tail points to the left

[image]

It is all the scores added together and than divided by the total number of scores.

The formula is as follows:

µ = ∑X/N

It is done the same way as the population mean but the is represented by a capital M.

The formula is as follows:

M = ∑X/N

It is the total number of scores in the combine group;  by adding the number of scores in the first sample (n₁) and the number in the second sample (n₂) and than divide by the total.  

The formula is as follows:

overall mean=M=∑X(overall sum for the combined group)/n(total number in the combined group)

It is a score category that his the greatest frequency.

For example scores:

1 2 3 3 4 5 6 6 6

6 would have the greatest frequency

having or involving two modes, in particular (of a statistical distribution) having two maxima.