Telegram group: T.me/BBCNOUN [PHS805] An abstract should have the following features except? it should refer readers to the main body of work [PHS805] One of these is not a characteristic of a good research title? inconciseness [PHS805] About snowball sampling? uses recommendations and referrals [PHS805] A discrete variable ___ contains gaps between two observable variables [PHS805] A probability sampling is a method of sampling in which? every unit of the population has a chance of being sampled [PHS805] A good research question is? one you are interested in [PHS805] Observer bias refers to subjective observation of data [PHS805] One of these is a measure of dispersion standard deviation [PHS805] The standard deviation of a sample is? the spread of scores around the mean [PHS805] The best sampling method to use for a small and compact population is? simple random sampling