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WorksheetsMidterm Review - 2021
Total questions: 60
Worksheet time: 15hrs 0mins
(a) consists of information coming from observations, measurements, counts, or responses.
(a) is the science of collecting, organizing, analyzing, and interpreting data in order to make decisions.
A (a) is the collection of all outcomes, responses, measurements, or counts that are of interest.
A (a) is a subset of a population.
A (a) is a numerical characteristic of a population characteristic.
A (a) is a numerical characteristic of a sample characteristic.
__________ __________ is the branch of statistics that involves the organization, summarization, and display of the data.
(a)
___________ ___________ is the branch of statistics that involves using a sample to draw conclusion about a population.
(a)
(a) data consist of numerical measurements or counts.
(a) data consist of attributes, labels, or nonnumerical entries.
The use of a mathematical or physical model to reproduce the conditions of a situation or process is a(n) ...
experiment
survey
census
simulation
An investigation of one or more characteristics of a population is a(n) ...
experiment
survey
census
simulation
A sample in which every member of a population has an equal chance of being selected is called a ...
stratified sample
cluster sample
systematic sample
random sample
What type of sample often leads to biased studies?
random sample
convenience sample
systematic sample
simple random sample
A (a) sample is used when the population falls into naturally occurring subgroups, each having similar characteristics. To select this type of sample, the population is divided into groups called clusters. Then, all the members of one or more (but not all) of the clusters are selected.
A (a) sample is used when it is important to have members from each segment of the population. Depending on the study, members are divided up into 2 or more different subsets, called strata, that share a similar characteristic, such as age, gender, ethnicity, or even political preference. A sample is then randomly selected from each strata.
A (a) sample is a sample in which each member of the population is assigned a number. The members of the population are ordered in some way, a starting number is randomly selected, and then sample members are selected at regular intervals from the starting number. (For instance, every 3rd , 5th , or 100th member is selected.)
A (a) sample is one that is not representative of the population from which it is drawn.
A frequency histogram is...
a bar graph in which the class boundaries are on the y-axis and the frequencies are on the x-axis.
a bar graph in which the class boundaries are on the x-axis and the frequencies are on the y-axis.
a line graph in which the class boundaries are on the y-axis and the frequencies are on the x-axis.
a line graph in which the class boundaries are on the x-axis and the frequencies are on the y-axis.
To find class boundaries...
one must add the class limits together and divide by two.
one must subtract 0.5 from the upper limit and add 0.5 to the lower limit.
one must subtract 0.5 from the lower limit and add 0.5 to the upper limit.
one must add the class width to the lower limit.
Which of the following graphs can represent quantitative data?
pie chart
stem-and-leaf plot
dot plot
Pareto chart
Which of the following graphs can represent qualitative data?
pie chart
stem-and-leaf plot
dot plot
Pareto chart
Which of the following can represent bi-variate data sets?
scatter plot
pie chart
time-series chart
stem-and-leaf chart
What is the mode for the following set of data?
1, 2, 2, 3, 4, 5, 6, 7, 8, 9
2
bimodal: 2 and 6
no mode
What is the mean for the following set of data?
1, 2, 2, 3, 4, 5, 6, 7, 8, 9
2
4.5
there is no mean
4.7
What is the median for the following set of data?
1, 2, 2, 3, 4, 5, 6, 7, 8, 9
2
4.5
there is no mean
4.7
skewed right
uniform
symmetric
skewed left
Another name(s) for symmetric is...
uniform
normal
bell curve
rectangular
What is the symbol for population size?
n
N
μ
σ
What is the symbol for population mean?
n
N
μ
σ
How do you find the range of a data set?
maxmin
min−max
minmax
max−min
What is the symbol for sample size?
n
N
μ
σ
What is the symbol for standard deviation?
n
N
μ
σ
If the variance of a data set is 16, what is the standard deviation?
256
4
32
64
If the mean is 10 and the standard deviation is 2, what is the z-score of 8?
4
-4
1
-1
If the mean is 25 and the standard deviation is 5, what is the z-score of 35?
2
-2
1
-1
Theoretical probability is what...
should happen
has happened in the past
Experimental probability is what...
should happen
has happened in the past
What is the theoretical probability of rolling a die and landing on a 2 or 6?
P(2 or 6)=
2/6
1/6
1/3
2/3
What is the theoretical probability of drawing a spade from a deck of cards?
13/ 52
1/ 4
1/ 52
4/ 13
What is a sample space?
a trial through which measures, counts, or results are obtained
the result of a single trial
the set of all possible outcomes of a probability experiment
What is the probability of tossing tails and rolling
an even number? _
(a)
_ is the likelihood of an event occurring.
(a)
The _ of an event A is all
the outcomes in the sample space that are not in event A.
(a)
You have a bag of 7 marbles: 1 red, 1 orange, 1
yellow, 1 green, 1 blue, 1 indigo, and 1 violet. What is the probability
of randomly selecting a red or blue marble?
(a)
Ms. Warnken has a candy jar full of jolly ranchers. She has 15 watermelon, 25 blue raspberry, 21 green apple, and 14 grape. Given that Ms. Warnken takes a watermelon jolly rancher, what is the probability that you would randomly select a green apple?
(a)
Ms. Warnken has a candy jar full of jolly ranchers. She has 15 watermelon, 25 blue raspberry, 21 green apple, and 14 grape. Given that Ms. Warnken takes a watermelon jolly rancher, what is the probability that you would randomly select a watermelon one too?
(a)
You flip one coin and it lands on heads. You flip the same coin and it lands on tails
Independent
Dependent
You draw a card from a deck, and without replacement, you draw a second card from the deck
Independent
Dependent
You study for your Chapter 3 Test. You pass the test
Independent
Dependent
You get an ice cream cone in January. You go swimming in July.
Independent
Dependent
You are shopping, and your roommate has asked you to pick up toothpaste and dental rinse. However, your roommate did not tell you which brands to get. The store has six brands of toothpaste and four brands of dental rinse. What is the probability that you will purchase the correct brands of both products?
(a)
There is a cooler full of sports drinks. There are 5 orange-flavored, 5 lemon lime-flavored, and 3 grape-flavored. You choose an orange or a grape.
Mutually Exclusive
Not Mutually Exclusive
There is a box full of balls numbered 1-10. You choose a ball numbered 3 or 7.
Mutually Exclusive
Not Mutually Exclusive
There is a basket full of fruit. There are 3 peaches and 5 apples. One of the apples is rotten and one of the peaches are rotten too. You choose a peach or a rotten fruit.
Mutually Exclusive
Not Mutually Exclusive
Your wardrobe only consists of blue and yellow shirts. 12 of your blue shirts are clean and 5 of them are dirty. You choose a blue shirt or a clean shirt.
Mutually Exclusive
Not Mutually Exclusive
A sample of auto dealerships found that 19% of automobiles sold are silver, 22% of automobiles sold are SUV’s. 16% of automobiles sold are silver SUVs. What is the probability that a randomly chosen sold automobile is silver or an SUV?
(a)
Of 400 college students, 120 are enrolled in the math program, 220 are enrolled in the English program, and 55 are enrolled in both. If a student is chosen at random, find the probability that the student is enrolled in mathematics or English.
(a)
A men’s department store sells 3 different suit jackets, 6 different shirts, 8 different ties, and 4 different pairs of pants. How many different suits consisting of a jacket, shirt, tie, and pants are possible?
(a)
Are you going to pass this midterm?
yes
YES
of course
Oh yeah!
