# Statistical Software

## Zometric Statistical Software

Zometric Statistical software is one of the most  intuitive and easy to use software in the market. While most other statistical software require deep knowledge of statistics, our software is designed keeping the needs of beginners and business users in mind.

Its ideal for users who want to:

• Quickly and easily analyze their data anywhere, anytime - its browser based!
• Analyze data for lean, six sigma or other continuous improvement projects.
• Analyze day-to-day quality control / assurance data
• Generate customer requested reports like SPC / Control charts / process capability / MSA

## Statistical tools and features

### Graphical analysis

Graphical ToolsApplication Hint
Histogram (Flexi)View distribution of datasets with continuous data and discrete categories.
Histogram DistplotView distribution of data, and corresponding normal dist curve, categorized by group labels.
Out of Spec EstimatorEstimate probability of out of specification assuming normal distribution.
BoxplotVisual representation of quartiles of data and outliers if any.
Density HeatmapVisual representation of relationship between one or more categorical variables.
Scatter Plot 2DVisual representation of relationship between a pair of continuous variables.
Correlation AnalysisMeasure strength and direction of association between pairs of variables.
Scatter Plot 3DVisualise relationship between a response variable (Z) and two predictor variables (X and Y)
Pie ChartCompare the proportion(or relative contribution) of data in each category or group.
Bar ChartCompare statistics summary statistics, using bars to represent groups or categories.
Pareto ChartIdentify the significant / most frequency categories among many categories.
Timeline ChartGraphical timeline showing relationship between the tasks and the milestones.

### SPC Control Charts & Process Capability

SPC ToolsApplication Hint
Xbar-R-ChartWhen continuous data is collected in subgroups, with typical subgroup size 8 or less
Xbar-S-ChartWhen continuous data is collected in subgroups, with typical subgroup greater than 8
I-MR ChartWhen continuous data is collected as individual samples (subgroups size = 1)
P ChartWhen proportion of defectives (or binomial events) are tracked
NP ChartWhen defectives (or binomial events) on a constant sample size are tracked
U ChartWhen defects per unit (or Poisson events per opportunity) are tracked
C ChartWhen defects (or Poisson events) on a constant opportunity are tracked
Normal Process CapabilityDetermine how well a process output meets customer specifications, assuming normal distribution
Capability Six Pack (Normal)Statistical measure used to assess the performance and consistency of a process
Machine Capability (Normal)Assess and evaluate the performance and effectiveness of a machine or manufacturing process

### Hypothesis Tests

Hypothesis Testing toolsApplication Hint
One sample z-testDetermine whether the mean of a population differs significantly from a specified value, when the population standard deviation is known.
One sample z test for summarized dataDetermine whether the mean of a population differs significantly from a specified value, when the population standard deviation is known.
One sample t testDetermine whether the mean of a population differs significantly from a specified value, when the population standard deviation is unknown.
One sample t test for summarized dataDetermine whether the mean of a population differs significantly from a specified value, when the population standard deviation is unknown.
Two sample t testDetermine whether the mean of two samples differs significantly from each other.
Two sample t test for summarized dataDetermine whether the mean of two samples differs significantly from each other.
Paired t testDetermine whether the mean of differences between two paired samples differs significantly from a hypothesized differences.
One sample proportion testDetermine whether the population proportion differs from a specified hypothesized proportion.
Two sample proportion testDetermine whether the population proportion of two groups differ.
One Variance TestDetermine whether the variances of two or more groups or samples are significantly different from each other.
Two variance testDetermine whether the variances of two independent samples are significantly different from each other.

### Measurement System Analysis

MSA ToolsApplication Hint
Type 1 GRREvaluate the effects of bias + repeatability from multiple measurements of one part. Typically done before a gage R&R study.
Crossed GRRAssess the variation in your measurement system when every operator measures every part in the study in a balanced design.
Linearity & BiasAssess the linear relationship and evaluate systematic errors
Attribute AgreementAssess agreement among raters in assigning attributes or categories to items.

### Other Statistical Tools

Other ToolsApplication Hint
Fit Regression ModelModel the relationship between categorical or continuous predictors and one response.
AQL Sampling PlansAQL based attribute sampling plans, as per ANSI/ASQ Z1.4 standard.
One Way ANOVACompare the means of three or more groups to determine if there are statistically significant differences between them.

## System requirements

Zometric Statistical Software is a browser based software. All you need is a modern web browser like Google Chrome and an internet connection. No setup / installation is required.

## Licensing Options

Zometric Statistical Software is available in two licensing options:

• Single named user subscription.  This is ideal for individuals, or organizations with one user.
• Concurrent login limit subscription.  This is a cost effective option for organizations with multiple-users.