Identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster.
The author surveyed a sample from the population of his statistics class by
identifying groups of males and females, then randomly selecting five students from each ofthose two groups.

Stratified sampling

Step-by-step explanation:

Here, The author surveyed a sample from the population of his statistics class by identifying groups of males and females.

Since he randomly selecting five students from each of those two groups.

I.e. Groups of males and females are strata and author selected participants for sample from each strata.

Therefore , the sampling technique he used = Stratified sampling .

stew reads at the fastest rate of 265 words per minute.

step-by-step explanation:

it's a given that felicia reads at 260 word per minute and on connie's graph we can see that she reads 200 words per minute. since stew's table tells us that he read 795 in 3 minutes, we can divide 795 by 3 to find out how many words he reads per minute.

795/3 = 265

stew reads 265 words per minute - he reads at the fastest rate since felecia reads at 260 words per minute and connie reads at 200 words per minute.

stew (265) > felecia (260) > connie (200)