Question 1

How would you describe the frequency distribution above?

Accepted Answer

A)  Normal 
B)  Positively skewed 
C)  Negative skewed 
D)  Leptokurtic. 
A)  Normal 
B)  Positively skewed 
C)  Negative skewed 
D)  Leptokurtic. C

Question 2

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) 
  
-Using the data in the frequency distribution, what would be our estimate of the standard deviation in the population?

Accepted Answer

A)  1.29 
B)  1.40 
C)  1.14 
D)  1.18 
A)  1.29 
B)  1.40 
C)  1.14 
D)  1.18 D

Question 3

-Based on the above chart, what was the inter-quartile range of marks (approximately)?

Accepted Answer

A)  7% 
B)  14% 
C)  47% 
D)  22% 
A)  7% 
B)  14% 
C)  47% 
D)  22% B

Question 4

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) 
  
-Using the data in the frequency distribution what is the inter-quartile range of the data?

Accepted Answer

A)  5 
B)  4 
C)  3 
D)  1 
A)  5 
B)  4 
C)  3 
D)  1

Question 5

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) 
  
-Using the data in the frequency distribution what is the range of the data?

Accepted Answer

A)  5 
B)  4 
C)  3 
D)  1 
A)  5 
B)  4 
C)  3 
D)  1

Question 6

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) 
  
-Using the data in the frequency distribution, what would be our estimate of the variance in the population?

Accepted Answer

A)  1.29 
B)  1.40 
C)  1.14 
D)  1.18 
A)  1.29 
B)  1.40 
C)  1.14 
D)  1.18

Question 7

What is the relationship between the sum of squared errors (SS), the sample size (n) and the variance (s2)?

Accepted Answer

A)  SS = S2/(n-1). 
B)  S2 = SS/(n-1). 
C)  S2 = SS(n-1). 
D)  N = (S2/SS)-1. 
A)  SS = S2/(n-1). 
B)  S2 = SS/(n-1). 
C)  S2 = SS(n-1). 
D)  N = (S2/SS)-1.

Question 8

-Below is a histogram of ratings of Britney Spear's CD 'Britney'. What can we say about the data from this histogram?

Accepted Answer

A)  The data are normal. 
B)  The data are approximately bi-modal. 
C)  The median rating was 2. 
D)  The data are leptokurtic. 
A)  The data are normal. 
B)  The data are approximately bi-modal. 
C)  The median rating was 2. 
D)  The data are leptokurtic.

Question 9

-Based on the above chart, what was the median mark (approximately)?

Accepted Answer

A)  65% 
B)  72% 
C)  58% 
D)  77% 
A)  65% 
B)  72% 
C)  58% 
D)  77%

Question 10

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) 
  
-Using the data in the frequency distribution what is the median of the data?

Accepted Answer

A)  4.00 
B)  3.69 
C)  1.00 
D)  3.45 
A)  4.00 
B)  3.69 
C)  1.00 
D)  3.45

Question 11

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) 
  
-Using the data in the frequency distribution what is the mode of the data?

Accepted Answer

A)  4.00 
B)  3.69 
C)  1.00 
D)  3.45 
A)  4.00 
B)  3.69 
C)  1.00 
D)  3.45

Question 12

-What is the above graph known as?

Accepted Answer

A)  A scatterplot. 
B)  A histogram. 
C)  A box-whisker diagram. 
D)  An error bar chart. 
A)  A scatterplot. 
B)  A histogram. 
C)  A box-whisker diagram. 
D)  An error bar chart.

Question 13

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) 
  
-Using the data in the frequency distribution what is the mean of the data?

Accepted Answer

A)  4.00 
B)  3.69 
C)  1.00 
D)  3.45 
A)  4.00 
B)  3.69 
C)  1.00 
D)  3.45

Exam 36: Summarizing Data

How would you describe the frequency distribution above?

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) -Using the data in the frequency distribution, what would be our estimate of the standard deviation in the population?

-Based on the above chart, what was the inter-quartile range of marks (approximately)?

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) -Using the data in the frequency distribution what is the inter-quartile range of the data?

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) -Using the data in the frequency distribution what is the range of the data?

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) -Using the data in the frequency distribution, what would be our estimate of the variance in the population?

What is the relationship between the sum of squared errors (SS), the sample size (n) and the variance (s2)?

-Below is a histogram of ratings of Britney Spear's CD 'Britney'. What can we say about the data from this histogram?

-Based on the above chart, what was the median mark (approximately)?

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) -Using the data in the frequency distribution what is the median of the data?

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) -Using the data in the frequency distribution what is the mode of the data?

-What is the above graph known as?

Below is a frequency distribution from www.amazon.co.uk of 13 customer reviews of a CD called 'Some Loud Thunder' by an artist called Clap Your Hands Say Yeah (13 customer reviews) -Using the data in the frequency distribution what is the mean of the data?

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