A box plot is a graph that shows the frequency of numeric data values for a given variable. It indicates where most of the data is grouped and how much variation there is in the process. It is most useful when comparing between several data sets. This template allows you to enter up to 70 individual data points for two data sets, and the box plots will be displayed automatically to reflect your data.

Read more »# Tag Archives: data

# Box Plot

A **box plot** is a graph that shows the frequency of numeric data values. It can be drawn either horizontally or vertically. It is referred to as a Box-and-Whisker Plot as it displays the data in a box-and-whiskers format. Box plots are widely used in statistics, scientific research, higher education, process improvement, and in social and human sciences.

# Histogram

A **histogram** is a graph which shows the frequency of continuous data values. It is a type of bar chart that can be drawn either vertically or horizontally. Histograms are widely used in statistics, process improvement, scientific research, economics, and in social and human sciences.

# Histogram Template

A histogram is a bar chart that represents the frequency distribution of data on a given variable. It indicates where most of the data is grouped and how much variation there is in the process. This template allows you to enter up to 100 individual data points, and the histogram will be displayed automatically to reflect your data. The more data there is, the more accurate the histogram will be.

Read more »# Scatter Diagram Template

A scatter diagram is a graph that helps you visualize the relationship between two variables. It is used to check if changes in one variable are associated with changes in the other variable. For example, a scatter diagram can be plotted to check if there is a relationship between the number of months a person has been on the job and the time it takes him or her to complete his or her duties.

Read more »# Value Stream Map Template

A value stream map is tool that provides a high-level view of the important elements of an end-to-end process. Its primary goal is to identify waste and areas where improvement can be made in the existing operation. It is mainly used in manufacturing, however, it can also be applied in product development and service-related industries such as healthcare, hospitality and logistics.

Read more »# Graphical Analysis

Graphing the data can be utilized for both historical data already available and when analyzing the data resulting from live data collection activities. Of course, you need to pick the right graphical tool as there are a lot of different ways to plot your data. A number of commonly used graphical tools will be covered here. However, note that if one graph fails to reveal anything useful, try another one.

Read more »# Data Collection Plan Template

The main reason behind the **Data Collection Plan** is to provide a focused approach to data collection for any given study or project. It helps specifying the objective of the data collection, what data do we need, how are we going to collect it, and who is going to collect it. The goal is to answer questions such as whether the process is stable and capable, and whether the measurement system is accurate and capable.

# Audit Checklist

An **audit checklist** is a set of questions that must be answered to verify requirements or standards are being met. It compensates for the limitation of human memory and helps the observer to ensure that nothing is missed or left behind. It enables the observer to better address compliance gaps and provides an opportunity for continuous improvement. Common examples of checklists are: to-do lists, preventive maintenance schedules, safety audit checklists and 5S audit checklists.

# Matrix Diagram Template

A Matrix Diagram is a table that allows sets of data to be compared to understand the relationship between them. It displays the existence and strength of the relationship between pairs of items of the data sets. The relationship is normally indicated by a number or symbol in each cell where each two items intersect in the matrix. Matrix diagrams can be useful in a wide range of applications from matching requirements with specifications to assigning responsibilities based on competencies.

Read more »# Normality Testing in Minitab

The Normal Distribution is the commonest and the most useful continuous probability distribution. Many statistical tests require that the distribution is normal or nearly normal. Several tools are available to assess the normality of data including: using a histogram to visually explore the data, producing a normal probability plot, and carrying out an Anderson-Darling normality test. All these tools are easy to use in Minitab statistical software. Read more »

# Probability Distributions in Minitab

There are different shapes, models and classifications of probability distributions including the ones discussed in the probability distributions article. It is always a good practice to know the distribution of your data before proceeding with your analysis. Once you find the appropriate model, you can then perform your statistical analysis in the right manner. Minitab can be used to find the appropriate probability distribution of your data. Read more »