34 Consider the fumace temperature data in Exercise 33 a Find the sample median of these data b How much could the largest temperature measurement increase without changing the sample median

Read each item very carefully Write your answers on your answer paper 1 What is the purpose of statistics a) To collect data b) To summarize data c) To make predictions d) All of the above 2 Which of the following is NOT a branch of statistics a) Descriptive statistics b) Predictive statistics c) Inferential statistics d) Observational statistics 3 What is the population in statistics a) A group of individuals being studied b) A subset of the sample c) The entire group of interest d) The average of the data points 4 Which of the following is a measure of central tendency a) Standard deviation b) Variance c) Mean d) Range 5 What does a histogram represent a) Frequency distribution b) Scatter plot c) Pie chart d) Line graph 6 Which of the following is an example of inferential statistics a) Calculating the mean of a data set b) Conducting hypothesis testing c) Describing the characteristics of a sample d) Organizing data into a frequency distribution 7 What is the difference between inferential and descriptive statistics a) Inferential statistics involves making predictions while descriptive statistics involves summarizing data b) Descriptive statistics involves hypothesis testing while inferential statistics involves data collection c) Inferential statistics deals with continuous data while descriptive statistics deals with categorical data d) Descriptive statistics involves analyzing the relationship between variables while inferential statistics involves calculating measures of central tendency 8 How is the median calculated for ungrouped data a) The sum of all data points divided by the number of data points b) The middle value of the data set c) The most frequently occurring value in the data set d) The difference between the maximum and minimum values 9 What is the median of the following set of numbers 5 8101215 a) 8 b) 10 c) 11 d) 12 10 What is the mode of a data set a) The average of the data set b) The middle value of the data set c) The most frequently occurring value in the data set d) The sum of all data points divided by the number of data points 11 If a data set has no repeated values what can be said about its mode a) It has no mode b) It has multiple modes c) It is equal to the median d) None of the above 12 What is the formula for calculating the sample median for ungrouped data a) Median =(n+1) / 2 b) Median =(n-1) / 2 c) Median =(n+1) / 4 d) Median =(n-1) / 4 13 Which measure of central tendency is most affected by outliers a) Mean b) Median c) Mode d) All are affected equally 14 In a data set of 5677810 what is the mean a) 6 b) 7 c) 717 d) 8 15 If a data set has two modes it is called a) Bimodal b) Unimodal c) Multimodal d) None of the above 16 What is the mode of the following set of numbers 3 5577999 a) 5 b) 7 c) 9 d) 6 17 In grouped data what does a class interval represent a) The range of data b) The number of data points c) A range of values grouped together d) The mean of the data set 18 How is the median calculated for grouped data a) It cant be calculated for grouped data b) The middle value of the data set c) The midpoint of the modal class d) The class with the most observations