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Labeled 1-10 please tell me which answer is for which ex 1.) A
1 pts D | Question 1 The following table shows the distribution of scores on a final elementary statistics examination f a large section of students. Number of Students Classes for Exam Scores 90 and over 80-90 70-80 60-70 50-60 40-50 Under 40 12 40 18 13 6 udents scored 70 The cumulative relative frequency for the class 60 70 (i.e. what percentage of st or lower) is 0.43 0.12 O 0.57 O 0.06
D Question 2 1 pts A statistic is a characteristic of a population O True O False
Question 3 1 pts Here is data on the average hours spent studying per day by a sample group of college students. Average Hours of Study 0-2 3-4 5-6 7-10 Frequency 45 35 29 21 The relative frequency of students who study 5-6 hours a day is: 0.223 O 0.323 0.600 0.133
1 pts D Question 4 It was re instead of the leading opposing candidate, 48% is an example of ported from a survey that 48 percent of the population will vote for the current president 0 a qualitative variable. O a statistic. O a census O a sample.
Question 5 1 pts A (parameter, statistic)- is a characteristic of the sample. O statistic O parameter
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D Question 7 1 pts Data that are measured over an interval are called O discrete data. O raw data. O continuous data. O categorical data.
D | Question 8 1 pts Relative frequencies are whole numbers. O True O False
Question 9 1 pts A subset of a population is called a (census, sample, small population) O census O sample O small population
D Question 10 1 pts If the first five classes of a frequency distribution have a cumulative frequency of 50 from a sample of 58, the sixth and last class must have a frequency count of 0.7 O 58 050
math   Statistics-And-Probability   
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Answer #1

Solution-1: Arranging the data as shown in below table; Class Under 40 40-50 50-60 60-70 70-80 80-90 90 and over Total Number of Students 6 6 13 18 40 12 Cumulative Frequency 6 12 25 43 83 95 100 Cumulative Relative Frequency 0.06 0.12 0.25 0.43 0.83 0.95 1.00 100 From above table; the cumulative relative frequency for the class 60-70 0.43 Solution-2: A statistic is a characteristic of a sample Hence, correct answer- False Solution-3: Relative frequency of students who study 5-6 hours a day: 29 4535 29 21 - 0.223 Solution-4: 48% is an example of a statisticSolution-5 A statistic is a characteristic of the sample Solution-6: It is impossible to determine the answer without knowing the actual numbers of people involved. We can only comment on relative frequencies. Solution-7: Data that is measured over an interval are called continuous data Solution-8: Relative frequencies are not whole numbers. They are in decimal form Hence, correct answer- False Solution-9: A subset of a population is called a sample Solution-10: The total cumulative frequency of all classes 58 Hence, frequency count of sixth and last class = 58-50 = 8

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