1.Which of the following is an example of quantitative data? (Points : 5) the...

Question

1.Which of the following is an example of quantitative data? (Points : 5)

the player’s number on a baseball uniform
the serial number on a one-dollar bill
the part number of an inventory item
the number of people in a waiting line

2.When the data have the properties of ordinal data and the interval between observations is expressed in terms of a fixed unit of measure, the variable has which scale of measurement? (Points : 5)

nominal
ordinal
interval
ratio

3.Which of the following variables use the interval scale of measurement? (Points : 5)

name of stock exchange
time
SAT scores
Social Security number

4.Which of the following isnotan example of descriptive statistics? (Points : 5)

a histogram depicting the age distribution for 30 randomly selected students
an estimate of the number of Alaska residents who have visited Canada
a table summarizing the data collected in a sample of new-car buyers
the proportion of mailed-out questionnaires that were returned

5.A frequency distribution is (Points : 5)

a tabular summary of a set of data showing the fraction of items in each of several nonoverlapping classes
a graphical form of representing data
a tabular summary of a set of data showing the number of items in each of several nonoverlapping classes
a graphical device for presenting categorical data

6.Which of the following graphical methods is most appropriate for categorical data? (Points : 5)

ogive
pie chart
histigram
scatter diagram

7.The proper way to construct a stem-and-leaf display for the data set {62, 67, 68, 73, 73, 79, 91, 94, 95, 97} is to (Points : 5)

exclude a stem labeled ‘8’
include a stem labeled ‘8’ and enter no leaves on the stem
include a stem labeled ‘(8)’ and enter no leaves on the stem
include a stem labeled ‘8’ and enter one leaf value of ‘0’ on the stem

8.The total number of data items with a value less than or equal to the upper limit for the class is given by the (Points : 5)

frequency distribution
relative frequency distribution
cumulative frequency distribution
cumulative relative frequency distribution

005_6zxlapo-bk3vrt5u.docx

Robert · Accepted Answer

1. For a multiple regression model, SSR = 600 and SSE = 200. The multiple coefficient of determination is (Points : 5)
	       0.333
       0.275
       0.300
       0.75
Coefficient of determination = 1 – [SSR/(SSR + SSE)] = 1 – (200/800) = 0.75
	2. A variable that takes on the values of 0 or 1 and is used to incorporate the effect of qualitative variables in a regression model is called (Points : 5)
	       an interaction
       a constant variable
       a dummy variable
       None of these alternatives is correct.
	3. In a multiple regression model, the variance of the error term  is assumed to be (Points : 5)
	       the same for all values of the dependent variable
       zero
       the same for all values of the independent variable
       -1
	4. A regression model involved 18 independent variables and 200 observations. The critical value of t for testing the significance of each of the independent variable's coefficients will have (Points :

1. Which of the following is an example of quantitative data? (Points : 5) the player’s number on a baseball uniform the serial number on a one-dollar bill the part number of an inventory item the...

Answer To: 1. Which of the following is an example of quantitative data? (Points : 5) the player’s number on a...

Answer To This Question Is Available To Download

Related Questions & Answers

Submit New Assignment