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

Question #1

Which do you NOT need to do?

A. Pay attention to lectures

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

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

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

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

Question #2

What lies at the 50th percentile?

A. Mode

B. Standard Deviation

C. Median

D. Mean

E. Range

Question #3

Which is false?

A. For any range, we can estimate p

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

C. 68% are on each side of the mean

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

E. 50% are on each side of the median

Question #4

A z-score is…

A. A variation ratio of the median to the range

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. An estimate of the size of the ordinal variance

Question #5

Standardized scores…

A. Form a normal distribution

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

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

D. Are normalized scores

E. Are calculated using z scores