Grocery_Prices {metaggR}

Data: Grocery Prices

Description

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).

Usage

E_GROCERIES

P_GROCERIES

THETA_GROCERIES

ID_GROCERIES

Format

E_GROCERIES

is a list of the judges' estimates of the prices in each of the 10 bundles of groceries. Specifically, the jth element is a vector of the judges' estimates of the price of the jth bundle.

P_GROCERIES

is a list of the judges' predictions of others. Specifically, the jth element is a vector of the judges' predictions of other judges' average estimate of the price of the jth bundle.

THETA_GROCERIES

is a vector of the prices of the 10 bundles of groceries. Specifically, the jth element is the actual price of the jth bundle.

ID_GROCERIES

is a list of the judges' identification numbers in the judgment tasks. Specifically, the jth element is a vector of identification numbers of judges' who participated in estimating the price of the jth bundle. These values make it possible to track a judge across judgment tasks.

Remark.

The elements of each list correspond to the same judgment task. Specifically, the jth 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 jth bundle.

Source

Asa Palley and Jack Soll. "Extracting the Wisdom of Crowds When Information Is Shared." doi: 10.1287/mnsc.2018.3047