Among the Senators in the current Congress, 49% are Democrats. The value 49% is

Question

Among the Senators in the current Congress, 49% are Democrats. The value 49% is a
(i) statistic
(ii) parameter
(iii) cannot be determined
(b) The hotel ratings are usually on a scale from 0 star to 5 stars. The level of this measurement is
(i) interval
(ii) nominal
(iii) ordinal
(iv) ratio
(c) In a career readiness research, 100 students were randomly selected from the psychology program, 150 students were randomly selected from the communications program, and 120 students were randomly selected from cyber security program. This type of sampling is called:
(i) cluster
(ii) convenience
(iii) systematic
(iv) stratified

Explanation / Answer

a) Parameter

beacuse we have choosen the value 49 % from a charaterstic i.e. senetors in congress.

if we take a random sample from senetors then it become statistic

b) Ordinal

beacuse we have rated on the scale of 0 to 5.but we dont know different between 0 and other.i,e 0 in the scale is not a true zero.

so it is ordinal.

c) cluster

beacause we from cluster of departments and then choose sample from each cluster

so it is cluster sampling.

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