Grocery_Prices {metaggR} | R Documentation |
Palley and Soll (2019) recruited volunteers passing through the student union to estimate the total price of 10 different bundles of nonperishable grocery items. Examples of items include a bottle of 190 Lil Critters Gummy Vites Sour Complete multivitamins ($10.93), a 5-oz. can of Wild Planet wild albacore tuna in extra virgin olive oil ($4.19), and an 11 oz. bag of Stauffer's Animal Crackers ($1.00).
E_GROCERIES
P_GROCERIES
THETA_GROCERIES
ID_GROCERIES
E_GROCERIES
is a list of the judges' estimates of the prices in each of the 10 bundles of groceries.
Specifically, the j
th element is a vector of the judges' estimates of the price of the j
th bundle.
P_GROCERIES
is a list of the judges' predictions of others.
Specifically, the j
th element is a vector of the judges' predictions of other judges' average
estimate of the price of the j
th bundle.
THETA_GROCERIES
is a vector of the prices of the 10 bundles of groceries.
Specifically, the j
th element is the actual price of the j
th bundle.
ID_GROCERIES
is a list of the judges' identification numbers in the judgment tasks.
Specifically, the j
th element is a vector of identification numbers of judges' who participated in
estimating the price of the j
th bundle. These values make it possible to track a judge across judgment tasks.
The elements of each list correspond to the same judgment task. Specifically, the j
th elements of
THETA_GROCERIES
, E_GROCERIES
, P_GROCERIES
, and ID_GROCERIES
represent the true price, estimates, the predictions of others, and identification
numbers associated with the j
th bundle.
Asa Palley and Jack Soll. "Extracting the Wisdom of Crowds When Information Is Shared." doi: 10.1287/mnsc.2018.3047