Lidge points from all the parts i Part A
1) What is the idea behind frequency distribution?
2) Which is the common sampling method?
3) What is the measure of central tendency called?
4) What observation basically describes a sample size?
5) What is the measure of dispersion from a mean called?
6) Sample mean or the population mean: which varies the most?
7) Sample mean or individual observation: which varies the most?
8) What is the benefit of increasing the sample size?
9) Numerically characterize a Standard Normal Distribution

a frequency distribution is an overview of all different values in some variable and the number of times they occur that is frequency distribution tells how frequencies are distributed over values frequency distributions are mostly used for summarizing categorical variables.

in non probability sampling the sample is selected based on the random criteria and not every member of the population has a chance of being included, non probability sampling methods include convenience sampling voluntary response sampling purposive sampling snowball sampling and quota sampling.

in statistics a central tendency (or measure of central tendency) is a central or typical value for a probability distribution. ... Colloquially measures of central tendency are often called averages the term central tendency dates from the late 1920s

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