In: Statistics and Probability
1. In a percentage cross‑tabulation, the conventional rule for determining the direction of the percentages (if the researcher has identified the independent and dependent variables) is to:
Select one:
a. compute the percentages in the direction of the dependent variable.
b. compute the percentages in the direction of the independent variable.
c. none of the above (there is no conventional rule).
d. perform an elaboration analysis.
2.
“Don’t know” answers in interview records can be coded by:
Select one:
a. using “dont’ know” as a separate data category.
b. all of the above
c. redistributing these answers into the other categories of the question on a proportionate basis.
d. eliminating these answers in the tabulation of percentage
totals.
3.
When a telephone interviewer mistakenly records a birth year as 1875, correcting this mistake is an example of editing for _____________.
Select one:
a. legibility
b. omission
c. reliability
d. consistency
4.
The process of changing the original form of the data to a format suitable to perform a data analysis is:
Select one:
a. formatting.
b. none of the above
c. data transformation.
d. normalization.
5.
The purpose of is to insure completeness, consistency, and readability of the data to be transferred to data storage.
Select one:
a. keypunching
b. coding
c. editing
d. checking
Solutions :
1. In a percentage cross‑tabulation, the conventional rule for determining the direction of the percentages (if the researcher has identified the independent and dependent variables) is to:
b. compute the percentages in the direction of the independent variable.
explaination : Cross tabulation allows us to look at relation between two variables. We compute percentage according to the variable in column and there is independent variable is in column. Hence in the direction of independent variable.
2. “Don’t know” answers in interview records can be coded by:
c. redistributing these answers into the other categories of the question on a proportionate basis.
Explanation : If you are collecting a data about the persons who gambles. but many people dont have any idea about gambling. so they will respond as dont know. In simple words,if your data is oriented about only those who know gambling then eliminate those responses.
we can redistribute those answers into the other categories of the question on a proportionate basis.
3. When a telephone interviewer mistakenly records a birth year as
1875, correcting this mistake is an example of editing for
_____________.
c. reliability
Explanation : if you are interviewing a person of age 100 and you are recording birth year as 1875, then definitely this is wrong. because a person born in 1857 cant be alive . Hence we edit ans for reliability.
4. The process of changing the original form of the data to a format suitable to perform a data analysis is
c. data transformation.
Explanation : To analyse the data in the original form is not possible hence we need to get a standard form to make data operations. Hence data transformation is done.
5.The purpose of is to insure completeness, consistency, and
readability of the data to be transferred to data storage.
a. keypunching
Explanation : Keypunching is two way checking that insures there is no missing data or inconsistent data.