Assignments -

1) Choose one of the two morphometric tasks below. Due 4/25

a) Using bluegill data, get length-weight relationship for Bluegills and determine if males differ from females.
b) Using flier dataset, determine the best model (SLR, Polynomial or Power model) for the flier sunfish body length - scale length relationship.
in either case, justify your conclusions with statistical tests.

2) Run either a Ricker recruitment model on the Plaice dataset or a Schaeffer model on the Halibut dataset. Due 5/02

Provide estimates and confidence intervals of regression coefficients for Ricker model, or
Discuss which of the several approaches is best for the Schaeffer model.

3) Fit a growth model for the flier sunfish. Determine if the growth model is the same for the two sexes (omit immatures). Due 5/09

Dataset descriptions
BLUEGILL.DAT -- BLUEGILL AND CRAPPIE DATA SET CONTAINS TWO YEARS OF
                BLUEGILL DATA AND ONE OF CRAPPIE
     INPUT OBS MO DAY YR SPECIES SEX STDLT FORKLT TOTLT WT AGE
           ANNULI1-ANNULI3 TSL;

LOBSTER.DAT -- CATCH AND EFFORT DATA FOR HOMARUS AMERICANUS
INPUT YEAR CATCH EFFORT;

CISCOS.DAT -- DATA FROM RICKER (1975, p 226) CISCOS FROM VERMILLION LAKE (MINN)
INPUT AGE SAMPSIZE WEIGHT LENGTH;
WHERE; AGE IS IN YEARS, SAMPSIZE IS n, WEIGHT IN GRAMS, LENGTH IN MM.

HERRING.DAT -- DATA FROM GULLAND (1969, p 41) FOR THE MEANS OF 45 YEARS OF
               HERRING LENGTHS BY AGE
     INPUT AGE LENGTH;
     WHERE; AGE IS IN YEARS, LENGTH IN MM. WITH 1 DECIMAL

SALMON.DAT -- DATA FOR TILLAMOOK BAY SALMON FROM RICKER (1975, p 289)
     INPUT YEAR PARENTAL LRECRUIT MINFLOW
     WHERE; PARENTAL IS PARENTAL STOCK LEVEL, LRECRUIT IS LOG OF RECRUIT INDEX
            AND MINFLOW IS THE FLOW IN CERTAIN STREAMS (EXPECT 3 YEAR LAG)

PLAICE.DAT -- DATA FROM RICKER (1975, p 294) FOR NORTH SEA PLAICE
INPUT PARENTAL RECRUIT;
WHERE; PARENTAL AND RECRUIT STOCK INDICES (ARBITRARY UNITS).

HALIBUT.DAT -- Data from Ricker (1975) pg 320-321
INPUT Year Yield Effort
WHERE; yield (millions of lbs) and effort (thousands of skates)

FLIER02.SD2 - Flier sunfish data (SAS dataset)
     variables in the sas dataset are:
     Age Lt Wt TSL Swamp Station Sex SASDATE
          Age - from Scale annuli
          Lt - length in cm
          Wt - weight in grams
          TSL - total scale length
          Swamp - one of 3 swamps
          Station number WITHIN swamp
          Sex - alphanumeric
          SASDATE - sas date variable