Classify each of these variables as discrete, continuous, nominal, or ordinal (a
ID: 3111568 • Letter: C
Question
Classify each of these variables as discrete, continuous, nominal, or ordinal (a) weight of a car ____ (b) Political ____ (c) capacity of a football stadium ___ (d) capacity ___ (e) graduation honors (cum laude, magna cum laude. summa cum laude) ___ Write the word tree or false for each statement (a) A population is a subset of a sample.___ (b) If the standard deviation of a sample is equal to 49, then the variance is equal to 7._____ (c) A statistic is a characteristic of a sample.___ A sociologist wishes to examine the number of children in the households in a neighborhood of interest. He organizes the result of a survey into this ungrouped frequency distribution. (a) What is the mean number of children?___ (b) Complete the cumulative frequency column. (c) Complete the relative frequency column. A clinic collects data on the fasting glucose levels of a group of men classified as pre-diabetic. The data are organized into this grouped frequency distribution. (a) Sketch a histogram for this distribution. Be sure to label the axes. (b) What are the mean, median, mode, and midrange of this distribution? Ten people In a room have a mean height of 5 feet 6 inches. An 11th person, who is 6 feet 5 laches tall, enters the room. Find the mean height of all 11 people. Twenty-one people in a room have a mean height of 5 feet 6 ladies. A 22nd person, who is 6 feet 5 Inches tall, enters the room. Find the mean height of all 22 people. Twenty-one people in a room have a main height of 5 feet 6 Indies. A 22nd person enters the room. How tall would this person have to be to raise the mean height by 1 inch? Mean hourly earnings are computed each month by the Bureau of Labor Statistics using payroll data from commercial establishments. The Bureau figures the total wages paid out (to non supervisory personnel), and divides by the total hours worked. During recessions, mean hourly earnings typically go up. When the recession ends, mean hourly earnings often start going down. Explain how this happens. Compute the standard deviation of each of these samples. (a) 23, 33, 36, 44, 51 (b) 12, 12, 12, 12, 12Explanation / Answer
1. a. Weight of a car Is continuous.
b. Political party affiliation is nominal.
c. Capacity of a football stadium is discrete.
d. Capacity of a car fuel tank is continuous.
e. Graduation honours is discrete.