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 Indicate whether each of the following variables is discrete or continuous:
 the time it takes for you to get to school Answer 1a
 the number of Canadian couples who were married last year Answer 1b
 the number of goals scored by a women’s hockey team Answer 1c
 the speed of a bicycle Answer 1d
 your age Answer 1e
 the number of subjects your school offered last year Answer 1f
 the length of time of a telephone call Answer 1g
 the annual income of an individual Answer 1h
 the number of employees at Statistics Canada Answer 1i
 the number of brothers and sisters you have Answer 1j
 the distance between your house and school Answer 1k
 the number of pages in a dictionary Answer 1l
 Without using any of the examples from question 1, give two examples of: Answer 2
 a discrete variable
 a continuous variable
 A telephone company surveyed 12 households to find out how many telephones there were per household.
 Copy the frequency distribution table below into your notebook and complete it using the following survey results:
2, 5, 4, 3, 4, 3, 1, 3, 3, 2, 3, 4 Answer 3a
 Which result occurs most frequently? Answer 3b
 A local convenience store owner records how many customers enter the store each day over a 25day period. The results are as follows:
20, 21, 23, 21, 26, 24, 20, 24, 25, 22, 22, 23, 21, 24, 21, 26, 24, 22, 21, 23, 25, 22, 21, 24, 21
 Are these discrete or continuous variables? Answer 4a
 Present these data in a frequency distribution table. Answer 4b
 Which result occurs most frequently? Answer 4c
 Set up a frequency distribution table including columns for the relative frequency and percentage frequency of the data. Answer 4d
 What conclusions can you draw from the tables? Explain.
 A wind blew for 40 days. Its wind speeds, in knots, were recorded as follows:
15, 22, 14, 12, 21, 34, 19, 11, 13, 0, 16, 4, 23, 8, 12, 18, 24, 17, 14, 3, 10, 12, 9, 15, 20, 5, 19, 13, 17, 11, 16, 19, 24, 12, 7, 14, 17, 10, 14, 23
 Are these discrete or continuous variables? Answer 5a
 Choose an appropriate class interval and present these data in a frequency distribution table. Answer 5b
 Which class interval occurs most frequently? Answer 5c
 Set up a frequency distribution table including columns for the relative frequency and percentage frequency of the data.Answer 5d
 What conclusions can be drawn from the tables? Explain. Answer 5e

 Prepare an ordered stem and leaf plot for the data in Exercise 5. Answer 6a
 Do any outliers exist? If so, give a reason for their presence. Answer 6b
 Describe the main features of the distribution:Answer 6c
 number of peaks
 general shape
 approximate value at the centre of the distribution
 Thirty people were surveyed to find out how often they went to the movie theatre in one year. The results are as follows:
21, 35, 27, 2, 18, 25, 10, 4, 43, 14, 29, 24, 15, 9, 26, 31, 41, 1, 28, 38, 40, 22, 37, 26, 19, 0, 33, 12, 16, 23
 Copy the stem and leaf plot below into your notebook and complete it for the results. Answer 7a
 Now, turn the plot into an ordered stem and leaf plot. Answer 7b
 Assume the annual numbers of road fatalities from 1960 to 1992 were as follows:
10, 7, 8, 8, 17, 15, 17, 23, 14, 26, 31, 20, 32, 29, 31, 32, 38, 29, 30, 24, 30, 29, 26, 28, 37, 33, 32, 36, 32, 32, 26, 17, 20
 Are these discrete or continuous variables? Answer 8a)
 Prepare an ordered stem and leaf plot of these data.Answer 8b
 Expand the stem and leaf plot by using fiveunit class intervals. Answer 8c
 Do any outliers exist? If so, give a reason for their presence. Answer 8d
 Describe the main features of the distribution:Answer 8e
 number of peaks
 general shape
 approximate value at the centre of the distribution
 From 1982 to 2002, the average minimum April temperature (Celsius) was recorded as follows:
6,1, 8,9, 6,9, 7,2, 7,0, 6,2, 5,7, 6,2, 6,8, 6,4, 6,8, 6,4, 7,6, 7,8, 7,3, 6,8, 8,8, 7,8, 8,1, 8,1, 7,9
 Are these discrete or continuous variables? Answer 9a
 Prepare an ordered stem and leaf plot for this data. Answer 9b
 Is it necessary to expand the stem and leaf plot? Why or why not?Answer 9c
 Do any outliers exist? If so, give a reason for their presence. Answer 9d
 Describe the main features of the distribution. Answer 9e
 number of peaks
 general shape
 approximate value at the centre of the distribution
 Fifty staff members of a construction company were surveyed to find out what their weekly salary was to the nearest dollar. The results are as follows:
514, 476, 497, 511, 484, 513, 471, 470, 441, 466, 443, 481, 502, 528, 459, 548, 521, 517, 463, 478, 473, 514, 542, 519, 522, 523, 546, 487, 486, 473, 527, 470, 440, 564, 499, 523, 484, 463, 461, 437, 555, 525, 461, 539, 466, 470, 486, 490, 543, 519
 Are these discrete or continuous variables? Answer 10a
 Choose an appropriate class interval and present these data in a frequency distribution table. Answer 10b
 Which class interval occurs most frequently? Answer 10c
 Set up a frequency distribution table including columns for the relative frequency and percentage frequency of the data.Answer 10d
 What conclusions can you draw from the tables? Explain.Answer 10e
 Prepare an ordered stem and leaf plot for this data. Answer 10f
 Do any outliers exist? If so, can you give a reason for their presence? Answer 10g
 Looking at the stem and leaf plot, describe the main features of the distribution:Answer 10h
 number of peaks
 general shape
 approximate value at the centre of the distribution