# Question

A researcher studying the prevalence of alcohol use among seniors in a particular high school asked 45 of these youths how many drinks they had consumed in the last week. Convert the distribution containing four class intervals, and

(a) Determine the size of the class intervals,

(b) Indicate the upper and lower limits of each class interval,

(c) Identify the midpoint of each class interval,

(d) Find the percentage for each class interval,

(e) Find the cumulative frequency of each class interval, and

(f) Find the cumulative percentage for each class interval.

(a) Determine the size of the class intervals,

(b) Indicate the upper and lower limits of each class interval,

(c) Identify the midpoint of each class interval,

(d) Find the percentage for each class interval,

(e) Find the cumulative frequency of each class interval, and

(f) Find the cumulative percentage for each class interval.

## Answer to relevant Questions

The Psychopathy Checklist – Revised (PCL—R) is an assessment tool used to identify psychopaths, with scores ranging from 0 to 40 (a score of 30 or higher being indicative of psychopathy). A forensic psychologist ...The following is a cross-tabulation of sexual orientation by gender for a random sample of respondents aged 18 and over living in Chicago: a. Are there independent and dependent variables in this case? If so, what are they? ...1. A frequency distribution of the number of defendants sentenced to death in each of the 30 states during the year 2009 would be depicted best in the form of a a. histogram b. bar graph c. frequency polygon d. pie chart 2. ...Five convicts were given the following five prison sentences (in years): Find (a) The mode, (b) The median, and (c) The mean. (d) Which measure provides the most accurate indication of central tendency for these scores? A focus group of 10 adults was chosen to evaluate the performance of a candidate during a presidential debate. They were instructed to rate the candidate on two characteristics, knowledge and delivery, using a scale of 1 ...Post your question

0