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

Question #1

Which do you NOT need to do?

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

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

C. Pay attention to lectures

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

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

Question #2

What lies at the 50th percentile?

A. Mean

B. Range

C. Standard Deviation

D. Median

E. Mode

Question #3

Which is false?

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

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

C. 50% are on each side of the median

D. 68% are on each side of the mean

E. For any range, we can estimate p

Question #4

A z-score is…

A. The mean of the variance deviance

B. A proportion of variance away from the mean

C. An estimate of the size of the ordinal variance

D. A variation ratio of the median to the range

E. A # of standard deviations away from the mean

Question #5

Standardized scores…

A. Are calculated using z scores

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. Form a normal distribution

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

E. Are normalized scores