Use linking words and a range of vocabulary to describe what you see in the charts. (You can write % or per cent, but be consistent.) Be careful to use the correct tenses to describe the time periods shown..
Basics of Statistics
The central tendencies are mean, median and mode and dispersions comprise variance and standard deviation.
Mean is the average of the observations.
Median is the central value when observations are arranged in order.
The mode determines the most frequent observations in a data set..
1. : a branch of mathematics dealing with the collection, analysis, interpretation, and presentation of masses of numerical data.
2: a collection of quantitative data..
Basic statistical descriptions can be used to identify properties of the data and highlight which data values should be treated as noise or outliers. • For data preprocessing tasks, we want to learn about data characteristics regarding both central tendency and dispersion of the data..
Population: The set of all measurements of interest to the sample collector.
Parameter: A characteristic of the population.
Statistic: A characteristic of a sample drawn from a population.
Accuracy: Closeness of a measured or computed value to its true value..
