Nobody Knowns precisely when life began on Earth.
If"known_y" and"known_x" are empty or have
a different number of data points, then N/A is returned.
As long as the
protagonist manages the best known known- money- all other Knowns and unKnowns are manageable.
As long as the protagonist manages the best known known- money-
all other Knowns and unKnowns are manageable.
He“invented the convention of representing unKnowns in equations by x, y,
and z, and Knowns by a, b, and c“.
Broken down by sub-sample, an increase in incentive amount significantly
increased the completion rate among the unKnowns but not the Knowns.
Looking at all treatments together, the optimal treatment combination for Knowns is one with five questions and any incentive amount or pre-survey communication.
Looking more specifically by group,
increasing the survey length from five questions to 10 questions among Knowns significantly reduced the completion rate by 3.8%,
from 58.2% to 54.4%, and increasing to 25 questions significantly reduced the completion rate by 5.6% to 52.6%(p-value: 0.01872).