Deck 36: Summarizing Data

Question 1

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?

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

Answer 1

3.69

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 is the mode of the data?

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

Answer 2

4.00

Question 3

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?

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

Answer 3

4.00

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 would be our estimate of the standard deviation in the population?

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

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 would be our estimate of the variance in the population?

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

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 is the range of the data?

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

Question 7

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?

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

Question 8

How would you describe the frequency distribution above?

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

Question 9

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

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

Question 10

-What is the above graph known as?

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

Question 11

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

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

Question 12

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

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

Question 13

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

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