Draw a SPC chart from scratch including entering data:

Type of Data and/or Chart

Which data are collected

Number of observations
(For each X value or subgroup )

Enter New Data
(close any file first)

Show Graph

Simple Run Chart
(any data)

Consecutive measurements

One per time/sequence

Enter Data

Show Run Chart
 

Measurement data

Consecutive Measurements

one observation per subgroup

 Enter Data Show I Chart

varying from 2 to 10 per subgroup

 Enter values and time/sequence Show Xbar-R Chart

varying number, more than 10 per subgroup
Some authors suggest when more than 1

 Enter values and time/sequence Show Xbar-S Chart

Count data
(attribute)

Errors or deviant incidents are counted
(non conformities)

Counts
Constant denominator assumed

 Enter counts Show C Chart

Varying counts and denominator

 Enter counts and denominator Show U Chart

Proportions

counts and varying total

Enter counts and total Show P Chart

Rare Occurrences

Each incident recorded

One incident

 Enter as sequence
Enter as date
 Show G Chart

Categorical listing of reasons

Survey of reasons recorded

Varying number - possibly with frequency weights

 Enter as categories
 Show Pareto Chart

Notice: To use data later save data . To start again Clear Memory (close)
V0.95 Table for EpiData Analysis v2.1.1 or later - get software from epidata.dk
For general help, press F1.