California State University, Northridge » Sociology » Soc 424 - Statistical Techn » Fall 2021

Question #1

Which do you NOT need to do?

A. Worry about, think about, or say anything about missing variables

B. Be aware of the number of missing cases in frequency tables

C. Check for invalid values under the “Valid” heading in freq tables

D. Declare invalid values as Missing values in Variable View.

E. Pay attention to lectures

Question #2

What lies at the 50th percentile?

A. Median

B. Range

C. Mode

D. Standard Deviation

E. Mean

Question #3

Which is false?

A. 50% are on each side of the median

B. 68% are on each side of the mean

C. 100% of valid cases are “under the curve”

D. For any range, we can estimate p

E. 95% of cases fall within *about* 2 standard deviations

Question #4

A z-score is…

A. An estimate of the size of the ordinal variance

B. A # of standard deviations away from the mean

C. The mean of the variance deviance

D. A proportion of variance away from the mean

E. A variation ratio of the median to the range

Question #5

Standardized scores…

A. Are normalized scores

B. Are calculated using z scores

C. Translate an entire dataset to z scores, one by one

D. Are calculated using z scores, translate an entire dataset to z scores, one by one, form a normal distribution, and are normalized scores

E. Form a normal distribution