Describe the role of analysis is by analyzing the collected data to, and obtain better business climate variability and its impacts cognition.
Variable Category:
1. The value of the variable directly affected by the decision makers are called controlled variables.
2. influenced by factors that control decision-makers of the uncertainty may appear random variable is called volatility or uncertainty variable.
type of data:
The overall data and sample data.
The number of data and attribute data.
Cross-section data and time series data.
Simple query: excel simple screening alone query, frequency, frequency distribution.
Histogram: to demonstrate the frequency distribution, the frequency distribution or distribution percentage. The horizontal axis represents the interval vertical axis represents the frequency.
Mean: [mu] = [Sigma [chi] / n-
Commonly used data analysis values:
Mean = average ()
Median = median ()
The mode = mode.mult ()
Geometric mean: = geomean common language of the product open square mean