## Frequency Distribution

Frequency is how often something occurs. Definition of Frequency Distribution We can make a Frequency Distribution table by counting frequencies. So, Frequency Distribution means: values and their frequency (how often each value occurs). Learn More Stem and Leaf Plots Percentage Change Quartiles Discrete and Continuous Data Data Index

## Stem and Leaf Plots

Definition A Stem and Leaf Plot is a special table where each data value is split into a “stem” (the first digit or digits) and a “leaf” (usually the last digit). See this example: Example “47” is split into “4” (stem) and “7” (leaf). 10, 11, 22, 23, 24, 35, 36, 47, 48, 49 Stem … Continue reading "Stem and Leaf Plots"

## Data

Data is a set of values of subjects with respect to qualitative or quantitative variables. Data is measured, collected and reported, and analyzed, whereupon it can be visualized using graphs, images or other analysis tools. Raw data or unprocessed data is a collection of numbers or characters before it has been “cleaned” and corrected by … Continue reading "Data"

## Convert Decimals to Fractions

How to convert a Decimal to a Fraction? Write down the decimal divided by 1, like this: decimal/1 Multiply both top and bottom by 10 for every number after the decimal point. Simplify the fraction Examples Decimal Step 1 Step 2 Step 3 Fraction 0.75 2.35 = 2+0.35 0.333 Can’t get any simpler! Special Note: For … Continue reading "Convert Decimals to Fractions"

## Convert Percents to Fractions

How to convert a Percent to a Fraction? Write down the percent divided by 100 like this:  percent/100 If the percent is not a whole number, then multiply both top and bottom by 10 for every number after the decimal point. Simplify the fraction Examples Percent Step 1 Step 2 Step 3 Fraction 13% The … Continue reading "Convert Percents to Fractions"

## Decimals, Fractions, and Percentages

Definition Decimals, Fractions & Percentages are different ways of showing value Examples Percent Decimal Fraction 1% 0.01 1/100 5% 0.05 5/100 10% 0.1 10/100 25% 0.25 25/100 50% 0.5 50/100 75% 0.75 75/100 100% 1 100/100 125% 1.25 125/100 150% 1.5 150/100 200% 2 200/100 Conversions Base Form Decimals Fractions Percentages Decimals – 1) multiply … Continue reading "Decimals, Fractions, and Percentages"

## Discrete and Continuous Data

Data is defined as the facts & collected for the analysis purpose. Data is divided into qualitative data (descriptive) & quantitative data. The qualitative data cannot be measured in terms of numbers. On the other hand, quantitative data is one that contains numerical values and uses range. It is divided into discrete data & continuous data. Discrete data … Continue reading "Discrete and Continuous Data"

## Percentage Change

What Is Percentage Change? Percentage change can be applied to any quantity. Let’s say you are tracking the the grow of height. If the height increased, use the formula (New Height – Old Height)/Old Height Then, multiply that number by 100%. If the price decreased, use the formula (Old Height – New Height)/Old Height Then … Continue reading "Percentage Change"

## Relative Frequency

Definition Relative Frequency is How often something happens divided by all outcomes. To compute relative frequency, one obtains a frequency count for a subgroup of the population and a frequency count for the total population. The relative frequency is: How to Find Relative Frequency Relative frequency = Subgroup count / Total count The above equation … Continue reading "Relative Frequency"

## Quartiles

Definition of Quartiles What are Quartiles? In statistics, Quartiles are values that divide your data into quarters. They aren’t shaped like pizza slices. Quartiles divide your data into 4 segments according to where the numbers fall on the number line. The 4 quarters that divide a data set into quartiles are: Lowest 25% of numbers. Next lowest … Continue reading "Quartiles"