Maths Quest A Year 11 for Queensland WorkSHEET 9.1 1 2 3 4 Chapter 9 Collecting and entering data WorkSHEET 9.1 1 Collecting and entering data Name: ___________________________ Classify the following data as categorical or numerical: (a) type of car (b) weekly wage (c) plane fares (d) petrol prices (e) breed of dog (a) (b) (c) (d) (e) categorical numerical numerical numerical categorical Classify the following numerical data as discrete or continuous. (a) shoe size (b) foot length (c) students in a class (d) distance travelled to school (e) children per family (a) (b) (c) (d) (e) discrete continuous discrete continuous discrete (a) (b) (c) (d) (e) closed open open open closed (a) (b) (c) (d) (e) bias implied — emotional language double negative double barrelled leading question — emotional language Capable of being answered by the respondent? Classify the following questions as either open or closed. (a) Do you prefer meat of fish? (b) What type of meat do you prefer? (c) How much pocket money do you receive each week? (d) How many times have you travelled overseas? (e) Do you exercise more than two hours per week? Criticise the following questions. (a) Why don’t you like our fat and lazy form captain? (b) Why is it that you don’t reject the proposal for a new uniform? (c) Would you consider becoming captain of our newly formed Chess Club and have the distinction of being the first captain? (d) We believe that dingoes are dangerous. Do you believe they should be culled? (e) Do you agree with our Opposition Leader’s view on education? Maths Quest A Year 11 for Queensland 5 A random sample of 29 young people was surveyed to find the number of colours they have in their hair. Here are the raw data collected: 1, 3, 4, 2, 1, 2, 2, 2, 1, 1, 2, 2, 3, 3, 1, 2, 3, 1, 1, 2. (a) Organise the data into a frequency distribution table (b) How many people have one colour in their hair? (c) 6 Chapter 9 Collecting and entering data Which score has the highest frequency? (a) Numbers of hair colours Frequency How many people preferred the Jam Factory? (b) Which Village Cinema was preferred by 25 people in the survey? (c) How many people were surveyed? 1 7 2 8 3 4 4 1 (b) 7 people (c) 2 colours A number of people were surveyed as to their preference of Village Cinema. Here is a column graph of the data. (a) (a) WorkSHEET 9.1 35 (b) City Centre and Crown (c) 145 2 Maths Quest A Year 11 for Queensland 7 Chapter 9 Collecting and entering data WorkSHEET 9.1 The table below gives the charges to call various countries from Brisbane. (a) Primus Telecom Call Rates (per min) Country 8 Rate Canada $0.35¢ Chile $0.75¢ China $0.90¢ Croatia $0.70¢ Egypt $1.15¢ France $0.50¢ (a) Draw a column graph of the data. (b) Which country costs the least to call per minute? (c) At what rate is the call to Egypt charged? (c) (b) Canada $1.15 The pie graph below describes the survey results showing the favourite flower of a group of people. (a) 6 people like daisies. (b) 11 people like pansies. (c) 100 people were surveyed. (d) 59% chose a flower other than a rose. (e) 32 360 115.2 100 Approx 115 is covered by people who like gardenias. (a) How many people like daisies? (b) How many people like pansies? (c) How many people were surveyed? (d) What percentage of the people surveyed chose a flower other than a rose? (e) What size angle is covered by the people who like gardenias? 3 Maths Quest A Year 11 for Queensland 9 WorkSHEET 9.1 4 For the following table of values showing the favourite footwear of a group of 24 people, complete the fraction and angle-size column. Footwear 10 Chapter 9 Collecting and entering data No. of people Fraction Angle size Footwear No. of people Fraction 4 24 1 6 Sandals 4 Sandals 4 Runners 12 Runners 12 12 24 12 Boots 6 Boots 6 6 24 Thongs 2 Thongs 2 2 24 1 12 High heels 0 High heels 0 0 24 0 Total 24 Total 24 24 24 1 Use the completed table of values from question 9 to construct a pie graph. 1 4 Angle size 060o 180o 090o 030o 000o 360o