Question 1

If the boxplot for one set of data is much wider than the boxplot for a second set of data, then

Accepted Answer

A)  the mean of the first set of data must be larger than the mean of the second set of data 
B)  the median of the first set of data must be larger than the median of the second set of data 
C)  the second set of data must contain several outliers 
D)  none of the above need to be true 
A)  the mean of the first set of data must be larger than the mean of the second set of data 
B)  the median of the first set of data must be larger than the median of the second set of data 
C)  the second set of data must contain several outliers 
D)  none of the above need to be true

Question 2

A student received the following grades: An A in Statistics (4 credits), a C in Physics II (5 credits), a B in Sociology (3 credits), a B in a Literature seminar (2 credits), and a D in Tennis (1 credit). Assuming
A = 4 grade points, B = 3 grade points, C = 2 grade points, D = 1 grade point, and F = 0 grade points, the
Student's grade point average is:

Accepted Answer

A)  2.80 
B)  3.13 
C)  2.90 
D)  2.92 
A)  2.80 
B)  3.13 
C)  2.90 
D)  2.92

Question 3

Which of the following data sets (each consists of 1000 values grouped into a histogram) have the smallest value of $?$

$\sum_{i=1}^{n}\left(x_{1}-\bar{x}\right)^{2}$

Accepted Answer

A)  Option A 
B)  Option B 
C)  Option C 
D)  Option D 
E)  Option E 
A)  Option A 
B)  Option B 
C)  Option C 
D)  Option D 
E)  Option E

Question 4

Given the following data set, the IQR is 3. $$5,10,11,20,25,30$$

Accepted Answer

A) True 
 B)False

Question 5

What is the correct standard score for a batter who normally averages 0.325, with a standard deviation of 0.065 if he scores 0.410 for one game?

Accepted Answer

A)  1.308 
B)  0.410 
C)  0.325 
D)  1.275 
A)  1.308 
B)  0.410 
C)  0.325 
D)  1.275

Question 6

The median of {-4, -2, -2, -2, -4, 2} is

Accepted Answer

The answer of The median of {-4, -2, -2, -2,...

Question 7

Find the weighted mean for three exams if the first one was worth 75 points and the student received a
score of $$70 \%$$ , the second was worth 50 points and the student received a score of $80 \%$ and the third was
worth 30 points and the student received a score of $95 \%$ ?

Accepted Answer

The answer of Find the weighted mean for three exams...

Question 8

The median can be a more appropriate measure of central tendency if the distribution of the data is
extremely skewed.

Accepted Answer

A) True 
 B)False

Question 9

What is the mode of the following numbers? -10, 4, 2, -2, 2, 0, -3

Accepted Answer

A)  -4 
B)  0 
C)  -2 
D)  2 
A)  -4 
B)  0 
C)  -2 
D)  2

Question 10

Using the following frequency distribution, find the variance.
$\begin{array}{|l|l|}
\hline \text { Temperature } & \text { Frequency } \
\hline 28.5-31.5 & 1 \
\hline 31.5-34.5 & 3 \
\hline 34.5-37.5 & 6 \
\hline 37.5-40.5 & 10 \
\hline 40.5-43.5 & 8 \
\hline 43.5-46.5 & 7 \
\hline
\end{array}$

Accepted Answer

A)  180.4 
B)  197.3 
C)  192.6 
D)  183.2 
A)  180.4 
B)  197.3 
C)  192.6 
D)  183.2

Question 11

Find $Q _ { 1 } , Q _ { 2 }$, and $Q _ { 3 }$ for the following data set. $7,21,32,38$.

Accepted Answer

A)  $Q _ { 1 } = 14 , Q _ { 2 } = 265$, and $Q _ { 3 } = 35$ 
B)  $Q _ { 1 } = 10 , Q _ { 2 } = 25$, and $Q _ { 3 } = 36$ 
C)  $Q _ { 1 } = 5 , Q _ { 2 } = 20$, and $Q _ { 3 } = 39$ 
D)  $Q _ { 1 } = 14 , Q _ { 2 } = 25$, and $Q _ { 3 } = 25$ 
A)  $Q _ { 1 } = 14 , Q _ { 2 } = 265$, and $Q _ { 3 } = 35$ 
B)  $Q _ { 1 } = 10 , Q _ { 2 } = 25$, and $Q _ { 3 } = 36$ 
C)  $Q _ { 1 } = 5 , Q _ { 2 } = 20$, and $Q _ { 3 } = 39$ 
D)  $Q _ { 1 } = 14 , Q _ { 2 } = 25$, and $Q _ { 3 } = 25$

Question 12

The variance is the square root of the standard deviation of a set of data.

Accepted Answer

A) True 
 B)False

Question 13

If the value 5 has z-score of -0.75 in a dataset, then the mean of that dataset is

Accepted Answer

A)  5 
B)  4.25 
C)  5.75 
D)  It cannot be determined from the data given 
A)  5 
B)  4.25 
C)  5.75 
D)  It cannot be determined from the data given

Question 14

What is the range of the numbers -3, 2, -5, 3, 11:

Accepted Answer

A)  -3 
B)  2 
C)  6 
D)  16 
A)  -3 
B)  2 
C)  6 
D)  16

Question 15

$\text { Given the following frequency distribution, find the } 50^{\text {th }}$percentile.
$\begin{array}{|l|l|}
\hline \text { Class Boundaries } & \text { Frequencies } \
\hline 13.5-18.5 & 4 \
\hline 18.5-23.5 & 9 \
\hline 23.5-28.5 & 12 \
\hline 28.5-33.5 & 15 \
\hline 33.5-38.5 & 18 \
\hline
\end{array}$

Accepted Answer

A)  30.2 
B)  29.8 
C)  30.3 
D)  29.5 
A)  30.2 
B)  29.8 
C)  30.3 
D)  29.5

Question 16

All the values in a dataset are between 9 and 12, except for one value of 92. That value 92 is likely to be

Accepted Answer

A)  the range 
B)  an outlier 
C)  the mean 
D)  the boxplot 
A)  the range 
B)  an outlier 
C)  the mean 
D)  the boxplot

Question 17

Given the following data set, find the IQR.
29, 52, 42, 36, 57, 78, 43, 92

Accepted Answer

The answer of Given the following data set, find the...

Question 18

_______________ applies to any distribution regardless of its shape. 
________________________________________

Accepted Answer

The answer of _______________ applies to any distribution regardless of...

Question 19

What is the mean of the following numbers? 4, 6, 9, 11, 15

Accepted Answer

A)  6 
B)  8 
C)  9 
D)  10 
A)  6 
B)  8 
C)  9 
D)  10

Question 20

For a set of data with mean 12 and variance 36, approximately 68% of the values will fall between 0 and

Accepted Answer

A) True 
 B)False

If the boxplot for one set of data is much wider than the boxplot for a second set of data, then

Given the following data set, the IQR is 3. $5,10,11,20,25,30$

What is the correct standard score for a batter who normally averages 0.325, with a standard deviation of 0.065 if he scores 0.410 for one game?

The median of {-4, -2, -2, -2, -4, 2} is

Find the weighted mean for three exams if the first one was worth 75 points and the student received a score of $70 \%$ , the second was worth 50 points and the student received a score of $80 \%$ and the third was worth 30 points and the student received a score of $95 \%$ ?

The median can be a more appropriate measure of central tendency if the distribution of the data is extremely skewed.

What is the mode of the following numbers? -10, 4, 2, -2, 2, 0, -3

Using the following frequency distribution, find the variance. Temperature Frequency 28.5-31.5 1 31.5-34.5 3 34.5-37.5 6 37.5-40.5 10 40.5-43.5 8 43.5-46.5 7

Find $Q _ { 1 } , Q _ { 2 }$ , and $Q _ { 3 }$ for the following data set. $7,21,32,38$ .

The variance is the square root of the standard deviation of a set of data.

If the value 5 has z-score of -0.75 in a dataset, then the mean of that dataset is

What is the range of the numbers -3, 2, -5, 3, 11:

$\text { Given the following frequency distribution, find the } 50^{\text {th }}$ percentile. Class Boundaries Frequencies 13.5-18.5 4 18.5-23.5 9 23.5-28.5 12 28.5-33.5 15 33.5-38.5 18

All the values in a dataset are between 9 and 12, except for one value of 92. That value 92 is likely to be

Given the following data set, find the IQR. 29, 52, 42, 36, 57, 78, 43, 92

_ applies to any distribution regardless of its shape. __________________________

What is the mean of the following numbers? 4, 6, 9, 11, 15

For a set of data with mean 12 and variance 36, approximately 68% of the values will fall between 0 and

The Nature of Probability and Statistics

Frequency Distributions and Graphs

Discrete Probability Distributions

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

Testing the Difference Between Two Means, Two Proportions, and Two Variances

Correlation and Regression

Chi-Square and Analysis of Variance Anova

Tables

Data Bank

Glossary

Filters

Exam 3: Data Description

If the boxplot for one set of data is much wider than the boxplot for a second set of data, then

Which of the following data sets (each consists of 1000 values grouped into a histogram) have the smallest value of ??? ∑i=1n(x1−xˉ)2\sum_{i=1}^{n}\left(x_{1}-\bar{x}\right)^{2}∑i=1n​(x1​−xˉ)2

Given the following data set, the IQR is 3. 5,10,11,20,25,305,10,11,20,25,305,10,11,20,25,30

What is the correct standard score for a batter who normally averages 0.325, with a standard deviation of 0.065 if he scores 0.410 for one game?

The median of {-4, -2, -2, -2, -4, 2} is

Find the weighted mean for three exams if the first one was worth 75 points and the student received a score of 70%70 \%70% , the second was worth 50 points and the student received a score of 80%80 \%80% and the third was worth 30 points and the student received a score of 95%95 \%95% ?

The median can be a more appropriate measure of central tendency if the distribution of the data is extremely skewed.

What is the mode of the following numbers? -10, 4, 2, -2, 2, 0, -3

Using the following frequency distribution, find the variance. Temperature Frequency 28.5-31.5 1 31.5-34.5 3 34.5-37.5 6 37.5-40.5 10 40.5-43.5 8 43.5-46.5 7

Find Q1,Q2Q _ { 1 } , Q _ { 2 }Q1​,Q2​ , and Q3Q _ { 3 }Q3​ for the following data set. 7,21,32,387,21,32,387,21,32,38 .

The variance is the square root of the standard deviation of a set of data.

If the value 5 has z-score of -0.75 in a dataset, then the mean of that dataset is

What is the range of the numbers -3, 2, -5, 3, 11:

Given the following frequency distribution, find the 50th \text { Given the following frequency distribution, find the } 50^{\text {th }} Given the following frequency distribution, find the 50th percentile. Class Boundaries Frequencies 13.5-18.5 4 18.5-23.5 9 23.5-28.5 12 28.5-33.5 15 33.5-38.5 18

All the values in a dataset are between 9 and 12, except for one value of 92. That value 92 is likely to be

Given the following data set, find the IQR. 29, 52, 42, 36, 57, 78, 43, 92

_______________ applies to any distribution regardless of its shape. ________________________________________

What is the mean of the following numbers? 4, 6, 9, 11, 15

For a set of data with mean 12 and variance 36, approximately 68% of the values will fall between 0 and

The Nature of Probability and Statistics

Frequency Distributions and Graphs

Discrete Probability Distributions

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

Testing the Difference Between Two Means, Two Proportions, and Two Variances

Correlation and Regression

Chi-Square and Analysis of Variance Anova

Tables

Data Bank

Glossary

Filters

Given the following data set, the IQR is 3. $5,10,11,20,25,30$

Find the weighted mean for three exams if the first one was worth 75 points and the student received a score of $70 \%$ , the second was worth 50 points and the student received a score of $80 \%$ and the third was worth 30 points and the student received a score of $95 \%$ ?

Find $Q _ { 1 } , Q _ { 2 }$ , and $Q _ { 3 }$ for the following data set. $7,21,32,38$ .

$\text { Given the following frequency distribution, find the } 50^{\text {th }}$ percentile. Class Boundaries Frequencies 13.5-18.5 4 18.5-23.5 9 23.5-28.5 12 28.5-33.5 15 33.5-38.5 18

_ applies to any distribution regardless of its shape. __________________________