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Statistical Thinking. By: Bethanie Diffenderfer. To Bibliography. Distributions 200. Find Q uartile 1 and Quartile 3 of the following data: Number of times a person sneezes in a day: 0,0,0,0,1,1,1,1,1,1,2,2,2,2,3,3,3,4,4,4,5,5,6. Answer. Distributions 400. - PowerPoint PPT Presentation
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By:Bethanie Diffenderfer
To Bibliography
Statistical
Thinking
Distributions
Relationships
Samples, Surveys,
and Experiments
Probability Wonder Words
200 200 200 200 200
400 400 400 400 400
600 600 600 600 600
800 800 800 800 800
1000 1000 1000 1000 1000
Distributions 200 Find Quartile 1 and Quartile 3 of the
following data: Number of times a person sneezes in a
day: 0,0,0,0,1,1,1,1,1,1,2,2,2,2,3,3,3,4,4,4,5,5,6
Answer
Distributions 400 Joe Billy Bob is taking a survey for his
Statistics class on the ways people get to and from school. His findings show that 56 people ride the bus, 48 people drive themselves, 22 people carpool and 17 students walk.
With the presented data, what would be the best graph to use to display his findings?
Answer
Distributions 600 Describe the shape of the curve:
Answer
(1)
Distributions 800
A distribution of 6 scores has a median of 21. If there highest score increases 3 points, the
median will be?
Answer
Distributions 1000 What are the percentages of the data
for the red, red and green, red and green and blue sections of the graph.
Answer
(2)
Relationships 200
Please explain the process of how to construct a scatter plot. Make sure that
you include all points of a graph. (hint: the thing at the top, etc.)
Answer
Relationships 400
Answer
Describe the correlation of the graph below:
(3)
Relationships 600 There is a strong linear association between
the weight of a football player and the time in seconds it takes for that player to run a 100-yard dash. Knowing this. A reasonable value for the correlation r between weight and 100-yard dash time would be:
A: r = 0.8 B: r = 0 C: r = -0.8
Answer(4)
Relationships 800 Which of the following statements about
the slope of the least square regression line is true? A: It has the same sign as the correlation
coefficient r B: The square of the slope equals the
proportion of the variation in the response variable that is explained by the explanatory variable.
C: It is unitlessAnswer(4)
Relationships 1000 A local community college announces the
correlation between college entrance exam grades and scholastic achievement was found to be -1.08. On the basis of this you would tell the college that… A: The entrance exam is a good predictor of
success B: The exam is a poor predictor of success C: Students who do best on this exam will be
poor students D: The college should hire a new statistician E: Students at this school are underachieving Answer
Samples, Surveys, and Experiments 200Which of the following
statements are true? A: Random sampling is a good way to
reduce response bias. B: To guard against bias from
undercoverage, use a convenience sample. C: Increasing the sample size tends to
reduce survey bias. D: To guard against nonresponse bias, use
a mail-in survey.Answer
(4)
Samples, Surveys, and Experiments 400 You wish to conduct a study to examine
how the religious affiliation of a person may influence their opinion about abortions. Which of the following statements about the variable “religion affiliation” is true? A: It is the explanatory variable and is
quantitative B: It is the response variable and it is
categorical C: It is the explanatory variable and is
categorical Answer
Samples, Surveys, and Experiments 600
An auto analyst is conducting a satisfaction survey, sampling from a list of 10,000 new car buyers. The list includes
2,500 Ford buyers, 2,500 GM buyers, 2,500 Honda buyers, and 2,500 Toyota buyers. The analyst selects a sample of 400 car buyers, by randomly sampling
100 buyers of each brand. Is this an example of a simple random sample?
Answer
Samples, Surveys, and Experiments 800Which of the following statements
are true? A: A sample survey is an example of an
experimental study. B: An observational study requires fewer
resources than an experiment. C: The best method for investigating
causal relationships is an observational study.
Answer
Samples, Surveys, and Experiments 1000Nine hundred (900) high school freshmen
were randomly selected for a national survey. Among survey participants, the
mean grade-point average (GPA) was 2.7, and the standard deviation was 0.4. What
is the margin of error, assuming a 95% confidence level?
Answer
Probability 200A card is drawn randomly from
a deck of ordinary playing cards. You win $10 if the card is a spade or an ace. What is the probability that you will win the
game?
Answer
Probability 400On any given day, the probability
it will rain is 0.32; the probability the wind will blow is 0.2; and the probability that it will rain and the wind will blow is 0.1.
For a randomly selected day, what is the probability that it will NOT rain and the wind will NOT blow?
Answer
Probability 600
Two dice are rolled, find the probability that the sum is
equal to 5.
Answer
Probability 800A train is scheduled to leave the station at
3 P.M. However, it is equally likely to actually leave the station any time from
2:55 to 3:15 P.M. What is the probability it will depart the station early?
Answer
Probability 1000Suppose a die is tossed 5
times. What is the probability of getting exactly 2 fours?
Answer
Wonder Words 200What is an
inflexion point?
Answer(5)
Wonder Words 400The equation that is used to determine outliers in a set of data. Please state
the name and the formula.
Answer(5)
Wonder Words 600What is a numerical
measure of the direction and strength of a linear
association?
Answer(5)
Wonder Words 800
What reflects the overall accuracy and correlation of
statistical data sample?
Answer(5)
Wonder Words 1000
What is an extraneous variable in statistical mode that correlates with both the
dependent and independent variable?
Answer(5)
Distributions 200
Quartile 1: 1Quartile 3: 4
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Distributions 400
BusDrive
CarpoolWalk
0 20 40 60
School Transportation
School Transporta-tion
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A bar graph or histogram
Distributions 600
Skewed Right or Positively Skewed
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Distributions 800
21
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Distributions 1000
Red: 68%Red and Green: 95%Red, Green, and Blue:
99.7%
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Relationships 200 Title X-axis title Y-axis title Numerical values for x and y Dots corresponding to the x and y data
values.
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Relationships 400
A weak negative correlation.
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Relationships 600A: 0.8
This is because there is a strong linear correlation. As weight increases, time will increase as well making this a strong positive correlation. The closer you get to 1 in correlation the stronger it is. Since it is positive it is a positive number.
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Relationships 800
B: The square of the slope equals the proportion of the
variation in the response variable that is explained by
the explanatory variable.
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Relationships 1000
D: The college should hire a new statistician
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Samples, Surveys, and Experiments 200
None of them
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Samples, Surveys, and Experiments 400
C: It is the explanatory variable and is categorical
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Samples, Surveys, and Experiments 600 No, because every possible 400-buyer sample did not have an equal chance of
being chosen.
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Samples, Surveys, and Experiments 800
None of them
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Samples, Surveys, and Experiments 1000
0.025
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Probability 200
16/52 or 4/13
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Probability 400
0.58
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Probability 600
4/36 or 1/9
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Probability 800
0.25
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Probability 1000
0.161
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Wonder Words 200It is the point on the curve where the direction of the
curve changes from increasing to decreasing or
vise versa.
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Wonder Words 400
Inter Quartile Range(Q1 – Q3) x 1.5
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Wonder Words 600
Least-Square Regression Line
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Wonder Words 800
Variance
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Wonder Words 1000
Confounding
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Bibliography NCAR Command Language. 2013. Bolder, Colorado. NCAR.
Web. 11 September 2013. Wissing, Russ. Describing a Distribution. Seward High School,
Nebraska. Web. 11 September 2013. Niles, Robert. Standard Deviation. 1995. RobertNiles.com.
Web. 11 September 2013. Canul, Yvonne C. High School Content Expectations.
November 2007. Michigan Department of Education. Web. 17 September 2013.
Hart, Diana. Final Exam. AP Statistics. Romeo High School, Romeo, MI. 18 May 2011.
Hart Diana. Class Lecture. AP Statistics. Romeo High School, Romeo, MI. 2010-2011
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