Internal Code : MAS2009
Record :Every row represents a unique observation,but the ordering per se is immaterial biologically
Week Week of the year when the
butterfly scored for parasite load was collected
Year Year the parasite load on a capturedMonarch butterfly was observed RegionThree breeding regions for eastern North American
Monarchs based on latitude, timing
of spring recolonization and migratory flyways
Phase :Three cycles (phases) of breeding
in eastern North America: EARLY (15 April30 June), MIDDLE (1
July 14 August), and LATE (15 August)
Sex Gender of the butterfly scored
for parasite load
Infected Parasite load scored on a binary
scale: 0=no infection, 1=some level of infection
DegN Decimal degree latitude of the
collection
DegW Decimal degree longitude of the
collection
CLIMATIC VARIABLES
BIO1 = Annual Mean Temperature
BIO2 = Mean Diurnal Range (Mean of monthly
(max temp
min temp))
BIO3 = Isothermality (P2/P7) (*100)
BIO4 = Temperature Seasonality (standard deviation *100)
BIO5 = Max Temperature of Warmest Month
BIO6 = Min Temperature of Coldest Month
BIO7 = Temperature Annual Range
BIO8 = Mean Temperature of Wettest Quarter
BIO9 = Mean Temperature of Driest Quarter
BIO10 = Mean Temperature of Warmest Quarter
Hi ,concerning my assignment : I would like to add the hypothesis
The presence of female monarch butterflies is characterized by higher max temperatures ( the variable BIO5)
.
I would like you to calculate for the females what is the average of the values for : Max temperature for warmest month
The same with male monarch butterflies .
The hypothesis states that for females the average would be higher ( because the maturation of the eggs requires higher temperature )
Then ,please perform a T test to show whether the two averages show significant divergence or not
The R-script should include :
Mean, Standard Deviation, Standard Error of the mean , sample size
A t-test
A barplot , showing the 2 means with error bars ( Y- axis : temperature in degrees, X-axis = Male/Female )