Which can cause or introduce bias? (select all that apply)

a. response bias
b. wording
c. convenience sampling
d. voluntary sampling

How do you summarize data in a two-way frequency table?

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean

What is the measure of sty in oo below? 130 310 230 50