Question

**(2)** Indicate which of the following are
discrete measurements and which are continuous

measurements:

Discrete Continuous

___ ___ a) life of a Dell monitor

___ ___ b) waist size of NFL football players

___ ___ c) mileage of Japanese cars

___ ___ d) length of New York City NYC rats

___ ___ e) weight of human brains

___ ___ f) number of left-handed people on basketball teams

___ ___ g) time to complete the task of assembling a computer

___ ___ h) amount of fat in cheese

___ ___ i) number of male students in each statistics class

___ ___ j) speed of Japanese trains

___ ___ k) number of bedrooms in your home

**(3)** Indicate which of the following is a
parameter and which is a statistic:

Parameter Statistic

___ ___ a) population mean

___ ___ b) population standard deviation

___ ___ c) sample standard deviation

___ ___ d) population variance

___ ___ e) population median

___ ___ f) sample mean

___ ___ g) a mean obtained from a country census

___ ___ h) a mean obtained from sampling 2,000 American driving trucks

___ ___ i) a mean obtained from sampling 10,000 teenagers on Facebook

___ ___ j) average number of defects: a company manufactures 5,000 electron

microscopes and tests them all.

**(4)** For each of the following, indicate the
appropriate statistical measures that may be used for

analysis (e.g., proportions, median, quantiles, mode, mean, …). List as many as are appropriate.

a) For data measured on a nominal scale, you may use: ___________________________

b) For data measured on an ordinal scale, you may use: ___________________________

c) For data measured on an interval scale, you may use: ___________________________

**(5)** Dell Computers manufactures 1,000 super
computers. A researcher wants a sample of 50 of

them. Each of the computers are assigned numbers and then random numbers are used so that

every computer has an equal chance of being selected (5%).

a) This is known as a: ___________________.

b) Measurements obtained from this are known as: ___________________.

c) Suppose the researcher decides to sample 1,000 computers. This is called a

_________________.

d) Any measurement obtained is known as a ________________.

Answer #1

2.

Continuous a) life of a Dell monitor

Discrete b) waist size of NFL football players

Continuous c) mileage of Japanese cars [But for sake of simplicity this data can be recorded as dicrete]

Continuous d) length of New York City NYC rats

Continuous e) weight of human brains

Discrete f) number of left-handed people on basketball teams

Continuous g) time to complete the task of assembling a computer

Continuous h) amount of fat in cheese

Discrete i) number of male students in each statistics class

Continuous j) speed of Japanese trains

Discrete k) number of bedrooms in your home

3.

Any measure related to population is parameter , and any measure related to sample is statistic

Parameter a) population mean

parameter b) population standard deviation

statistic c) sample standard deviation

parameter d) population variance

parameter e) population median

statistic f) sample mean

parameter g) a mean obtained from a country census

statistic h) a mean obtained from sampling 2,000 American driving trucks

statistic i) a mean obtained from sampling 10,000 teenagers on Facebook

parameter j) average number of defects: a company manufactures 5,000 electron

4.

a) For data measured on a nominal scale, you may use: Proportions , mode

b) For data measured on an ordinal scale, you may use: Proportions , mode

c) For data measured on an interval scale, you may use: Mean, Median , Quartiles, Proportions , mode

5.

Dell Computers manufactures 1,000 super computers. A researcher wants a sample of 50 of

them. Each of the computers are assigned numbers and then random numbers are used so that

every computer has an equal chance of being selected (5%).

a) This is known as a: random sampling .

b) Measurements obtained from this are known as: statistic

c) Suppose the researcher decides to sample 1,000 computers. This is called a

cencus / complete enumeration .

d) Any measurement obtained is known as a parameter ,.

Indicate which of the following is a parameter (P), and which is
a statistic (S):
a) population’s count
b) sample’s average
c) a mean obtained from the U.S. census
d) an obtained from sampling 2,000 American adults using random
digit dialing
e) standard deviation of ½ of the given data
f) average number of defects after all the computers have being
tested

Which of the following variables are best thought of as
continuous, which discrete? Indicate your choice for each by
checking the appropriate column.
Variable Discrete Continuous
(a) The number of personal telephone calls made tomorrow at Bingley
Corporation
(b) The number of defective compact discs in a batch of 500
discs
(c) The time that a student in Calculus 101 takes to complete a
midterm exam
(d) The actual length of a roll of plastic wrap advertised to be 30...

categorical(qualitative) or quantitative. Indicate whether
quantitative data are continuous or discrete.
1. Gender
2. Age
3. Grade Point Average
4. Number of Courses Currently Enrolled
5. Enrollment Status (Part-Time or
Full-Time)

Which of the following are examples of discrete data or
continuous data?
A) The number of brown eggs produced by a hen
B) The production of wheat by weight
C) The number of pieces of mail lost by Fed-Ex
D) The number of red leaves produced by oaks in the autumn on Park
Ave.

Which of the following statements are TRUE?
Note that there may be more than one correct answer; select all
that are true.
1. a) All else being equal, the standard deviation of the
sampling distribution of the sample mean will be smaller for n = 10
than for n = 40.
b) The value of a statistic does not vary from sample to
sample.
c) Statistics have sampling distributions.
d) The value of a parameter does not vary from sample...

2 A scholar is studying the extent to which people hold
egalitarian beliefs. She obtains measurements on a large random
sample of U.S. adults. Each respondent is measured along an
egalitarianism scale that runs from a raw score of 0 (low
egalitarianism) to a raw score of 24 (high egalitarianism). A
computer analysis reveals that the mean is equal to 14, with a
standard deviation equal to 5.
. Obtain Z scores for each of the following raw egalitarianism
scores:...

A researcher measured the time that a sample of students
selected from Caldwell University spent studying on a given week
during a semester. Here are the data in hours:
4, 6, 5, 4, 5, 7, 8, 6, 5, 7, 8, 9,
9,1, 0, 2, 3, 5, 6, 4, 3, 7, 8, 4, 5, 6, 7, 8, 7, 6, 21, 7, 8, 9,2,
3, 2
ANSWER the following questions based
on the information given in question #9
Name the
population:_____________________________________________________________
Name...

1 T-test can be use for ____ traits
a immeasurable
b continuous
c discrete
d categorical
Which conclusive terminology can NOT be stated when testing a
hypothesis?
Select one:
a. We reject the null hypothesis
b. Our data supports the null hypothesis
c. We have proven the null hypothesis
d. We accept the null hypothesis
Most biological variation, especially among members of the same
species, is _______________ in origin.
Select one:
a. behavioral
b. environmental
c. statistical
d. maternal4 Consider...

Question
Which of the following is continuous data?
Select all correct answers.
Select all that apply:
The 2015 CDC family growth survey also asked women how many
cigarettes they smoked per day.
A survey management company measured how much time each
participant takes to complete a survey.
An environmental researcher measured the average length of the
fish in a certain lake.
A librarian counted the number of books returned in a day.

2) Natalie is interested in the money which people spend on
textbooks. She obtained mean of $100 that has a SD of $30 in a
sample of 121 students. What’s her 99% CI of the mean?
A. [40.00, 160.00] B. [94.66, 105.34] C. [95.42, 104.58] D.
[92.98, 107.02]
3) A researcher selects a sample of 1000 participants from a
population with a mean of 81 and a standard deviation of 10. About
99% of the sample means in this sampling...

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