Size Estimating Template

Student

Date

Program

Program #

Instructor

Language

Size Measure

Estimated

Base Parts

Base

Deleted

Modified

Added

Total

B

D

M

BA

Actual

Base Parts

Base

Deleted

Modified

Added

Total

Estimated

Actual

Parts Additions

Type

Items

Rel. Size

Size*

Size*

Items

Total

PA

Estimated

Actual

Reused Parts

Size

Size

Total

R

PROBE Calculation Worksheet (Added and Modified)

Size

Time

Added size (A):                                                     A = BA+PA

Estimated Proxy Size (E):              E = BA+PA+M

PROBE estimating basis used:  (A, B, C, or D)

Correlation: (R2)

Regression Parameters:                                        β0 Size and Time

Regression Parameters:                                        β1 Size and Time

Projected Added and Modified Size (P):            P = β0size + β1size*E

Estimated Total Size (T):                               T = P + B - D - M + R

Estimated Total New Reusable (NR):                   sum of * items                                        

Estimated Total Development Time:              Time = β0time + β1time*E

Prediction Range:                                              Range

Upper Prediction Interval:                                UPI = P + Range

Lower Prediction Interval:                                LPI = P - Range

Prediction Interval Percent: