The following data is a sample: 6 15 4 9 7 Calculate the 34th percentile for this sample. Select one: O a. 9.42 O b. 2.38 O c. 4.76 O d. 2.28The data below show the weights (in kg) of 30 dogs who visit Fred's Veterinary Surgery. 10 13 15 16 20 21 21 22 24 24 28 29 29 31 31 31 34 35 36 36 37 38 10 44 19 19 53 55 59 To construct a sensible, informative grouped frequency distribution that has 5 classes, the best class width to use would be: Select one: O a. 9.8 O b. 5 O c. 9 O d. 10The most appropriate types of graphs for displaying quantitative data are: Select one: O a. Scatter plot and bar chart O b. Line chart and pie chart O c. Pie and bar charts O d. Histogram and ogive A summary measure that is computed from a population is called Select one: O a. A parameter O b. A statistic O c. A sample O d. None of the aboveAn example of a quantitative, discrete variable is: Select one: Q a. The amount of money spent on entertainment each month 0 b. The ranking of athletes according to fitness O- c. The number of buses travelling to Brisbane city each day Q d. The country a student comes from Use the following information to answer the next four (4) questions: Four people were randomly chosen from those participating in a weight loss program and asked how much weight they had lost. The weights (in kilograms) that they had lost are recorded below. 6 9 11 Q1) Calculate the sample mean of these weights. Q2) Calculate the sample variance of the weights. A Q3) Calculate the standard deviation of the weights. Q4) Calculate the coefficient of variation of the weights.A car salesman wished to examine the number and prices of cars he had sold last month. The results are shown on the following ogive. Price of Cars Sold by Car Salesman Cumulative Frequency 10 20 30 40 50 60 70 Price ($'000) Which of the following statements is FALSE? Select one: O a. Approximately 25 cars cost less than $40,000 O b. The median car price was approximately $30,000 C. Approximately 2 cars were sold for more than $60,000 O d. The number of cars sold was 70lnferential statistics deals with techniques used to: Select one: 0- a. make inferences about a population parameter based on its sample statistics 0 b. all of the options are correct 0- c. decide how large a sample should be taken. 0 d. summarize the information and describe the characteristics of a set of data If two data sets have the same range: Select one: Q a. The distances from the smallest to the largest observations in both data sets will be the same 0 b. Both data sets must have the same mean 0 c. Both data sets must have the same standard deviation 0 d. The smallest and largest observations must be the same in both data sets During 2015 the marital status of a sample of Australian citizens was collected by survey. The data below shows the number of people in each category. Marital status Number of people Married 60 Single 89 Divorced 37 Other 75 If a pie chart were to be drawn for this data, the size of the angle of the sector for 'Single' would be: Select one: O a. 2610 Ob. 320.40 O C. 34.10 Od. 122.80A set of data which is collected at one point in time across a number of units of interest is referred to as: Select one: O a. time series O b. cross sectional O c. quantitative O d. nominalWhich would be the best measure of central tendency for the variable "country of birth"? Select one: O a. Mode O b. Mean O c. Median O d. RangeUse the following information to answer the two (2) questions: The frequency distribution below shows the amount ($lweek) spent by a sample of Griffith College students on food at the university's cafeteria. Weekly Spending ($) Number of People 20 s X