MINITAB INTRODUCTION

OMIS 642

Larry W. Jacobs

Minitab Basics

• Pull-down menus for Models
  -FOR EXAMPLE:
  ---STAT -> SPC -> PARETO -> DIALOG BOX
  ---INDICATE MODEL COMMANDS IN DIALOG BOX

• Session Window for Output

• Data Window for Data

CONTROL CHARTS

• XBAR CHART (VARIABLES DATA)
  -STAT -> CONTROL CHART -> XBAR -> DIALOG BOX
  -DIALOG BOX HELP - ?

• R CHART

• XBAR-R CHART

• P CHART (ATTRIBUTE DATA)

SPC

• PARETO
  -SPC -> PARETO -> DIALOG BOX

  IF RAW DATA USE
  -DEFECTS ONLY

  IF DEFECTS BY FREQUENCY USE
  -DEFECTS AND FREQUENCY

• CAUSE AND EFFECT (FISHBONE)
  -SPC -> CAUSE-AND-EFFECT -> DIALOG BOX

GRAPHS

• PLOT (SCATTER PLOT)
  GRAPH -> PLOT-> DIALOG BOX

  ENTER Y AND X COLUMNS

• CHART
  GRAPH -> CHART -> DIALOG BOX

  Y FOR DATA X FOR CATEGORY

• HISTOGRAM

• TIME SERIES (RUN CHART)

TIME SERIES FORECASTING

• STAT -> TIME SERIES -> TREND -> DIALOG BOX

• MOST USEFUL ARE:

  -TREND

  -DECOMPOSITION

  -MOVING AVERAGE

  -SINGLE EXPONENTIAL SMOOTHING

  -DOUBLE EXPONENTIAL SMOOTHING (TREND)

  -WINTER’S (TREND AND SEASONAL)

  -ARIMA - VERY POWERFUL BUT TECHNICALLY DEMANDING

REGRESSION

• RESPONSE Y
  (THIS IS DEPENDENT VARIABLE)

• PREDICTORS X
  (THESE ARE INDEPENDENT VARIABLES)

• RESPONSE = CONSTANT + COEFFICIENT * PREDICTOR

• MINITAB ESTIMATES
  -CONSTANT
  -COEFFICIENTS

• STAT -> REGRESSION -> REGRESSION -> DIALOG BOX

• RESPONSE - ENTER COLUMN

• PREDICTORS - ENTER COLUMN(S)

• FOR FORECASTING
  -OPTIONS
  -ENTER PREDICTOR VALUES FOR FORECAST IN:
  ---"PREDICTION INTERVALS FOR NEW OBSERVATIONS"
  ---OUTPUT WILL BE IN SESSION WINDOW