why is the iid assumption invalid? why is the bootstrap assumption invalid when is the iid assumption too strict what is the assumption of iid why is the assumption that the event is an iid too strict for bootstrap which assumption about iid is valid? when is the iid assumption too strict why is the IID assumption too strict which of the following conditions is this assumption not valid? what is the definition of iid in bootstrapping what is the iid assumption? which assumption is too strict for bootstrap why is the id assumption too strict for bootstrapping how does an iid assumption work when an individual triggers an event when is the iid assumption too strict for bootstrap what attributes of an event attract more users to trigger them? when is id assumption too strict for bootstrap why iid is assumed to be too strict why are some events more popular? when is iid assumed