Statistics Unit 1 – Flashcards

Determine whether the given value is a statistic or a parameter. A survey found that 67% of all respondents have a job. a)The value is a statistic because it is a numerical measurement describing some characteristic of a population. b) The value is a statistic because it is a numerical measurement describing some characteristic of a sample c) The value is a parameter because it is a numerical measurement describing some characteristic of a sample d) The value is a parameter because it is a numerical measurement describing some characteristic of a population

Determine whether the given value is a statistic or a parameter. A study of all 1430 employees at a college finds 35% own a computer. a)The value is a statistic because it is a numerical measurement describing some characteristic of a population. b) The value is a statistic because it is a numerical measurement describing some characteristic of a sample c) The value is a parameter because it is a numerical measurement describing some characteristic of a sample d) The value is a parameter because it is a numerical measurement describing some characteristic of a population

Determine whether the given value is a statistic or a parameter. A homeowner measures the voltage supplied to his home on a random sample of 43 days, and the average (mean) value is 119.8 volts. a)The value is a statistic because it is a numerical measurement describing some characteristic of a population. b) The value is a statistic because it is a numerical measurement describing some characteristic of a sample c) The value is a parameter because it is a numerical measurement describing some characteristic of a sample d) The value is a parameter because it is a numerical measurement describing some characteristic of a population

A particular country has 50 total states. If the areas of 45 states are added and the sum is divided by 45​, the result is 201,940 square kilometers. Determine whether the given value is a statistic or a parameter. a)The value is a statistic because it is a numerical measurement describing some characteristic of a population. b) The value is a statistic because it is a numerical measurement describing some characteristic of a sample c) The value is a parameter because it is a numerical measurement describing some characteristic of a sample d) The value is a parameter because it is a numerical measurement describing some characteristic of a population

Determine whether the given value is from a discrete or continuous data set. When a bus is randomly​ selected, it is found to have a weight of 1890.2 kg. A) It is from a discrete data set because the number of possible values is infinite and countable. B) It is from a discrete data set because the number of possible values is finite or countable. C) It is from a continuous data set because the number of possible values is infinite and not countable. D) The data set is neither continuous nor discrete.

Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate. Voltage measurements of batteries: 1.5V, 3V, 4.5V, 6V, and 7.5V a) nominal b) ordinal c)​ interval d) ratio

Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate. Livability rankings for cities a) nominal b) ordinal c)​ interval d) ratio

Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate. Body temperature in degrees Fahrenheit a) nominal b) ordinal c)​ interval d) ratio

Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate. College ranking a) nominal b) ordinal c)​ interval d) ratio

Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate. Car models a) nominal b) ordinal c)​ interval d) ratio

In a survey, the responses from respondents are identified as a 1 for a "yes", 2 for a "no", 3 for "maybe" and 4 for anything else. The average (mean) is calculated for 666 respondents and the result is 1.5. A) Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate. B) What is wrong with the calculation? 1. Such data are not counts or measures of​ anything, so it makes no sense to compute their average​ (mean). 2. Such data are not counts or measures of​ anything, so the average​ (mean) needs to be computed in a different way. 3. The true average​ (mean) is 2.1 4. There is nothing wrong with the given calculation.

In a set of​ data, car rankings are represented as 10 for first, 20 for second, and 30 for third. The average​ (mean) of the 602 car rankings is 25.4. A) Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate. B) What is wrong with the calculation? 1. Such data should not be used for calculations such as an average. 2. The true average is 18.2 3. One must use a different method to take the average of such data. 4. There is nothing wrong with the given calculation.

Which of the following is NOT a level of​ measurement? a) Quantitative b) Nominal c)Ordinal d) Ratio

Which of the following is associated with a​ parameter? a) Data that were obtained from a sample. b) Data that were obtained from a voluntary poll at the end of a service call. c) A numerical measurement describing some characteristic of a sample. d) Data that were obtained from an entire population.

Which of the following consists of discrete​ data? a) Tree height b) Hair color c) Amount of rainfall d) Number of suitcases on a plane

Which of the following would be classified as categorical​ data? a) Tree height b) Hair color c) Amount of rainfall d) Number of suitcases on a plane

Which level of measurement consists of categories only where data cannot be arranged in an ordering​ scheme? a) Ordinal b) Interval c) Ratio d) Nominal

Determine whether the given value is a statistic or a parameter. A sample of 120 employees of a company is selected, and the average age is found to be 37 years.

Determine whether the given value is a statistic or a parameter. After taking the first exam, 15 of the students dropped the class.

Determine whether the given value is a statistic or a parameter. After inspecting all of 55,000 kg of meat stored at the Wurst Sausage Co., it was found that 45,000 kg of the meat was spoiled.

Determine whether the given value is a statistic or a parameter. A health and fitness club surveys 40 randomly selected members and found that the average weight of those questioned is 157 lbs.

Determine whether the given value is a discrete or continuous data set. The number of freshmen entering college in a certain year is 621.

Determine whether the given value is a discrete or continuous data set. The temperature of a cup of coffee is 67.3 degrees.

Determine whether the given value is a discrete or continuous data set. The number of limbs on a 2 yr old maple tree is 28.3 ft

Determine whether the given value is a discrete or continuous data set. The height of a 2 yr old maple tree is 28.3 ft

Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate. The temperature of eight different plastic spheres a) nominal b) ordinal c)​ interval d) ratio

Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate. The sample of spheres categorized from softest to hardest a) nominal b) ordinal c)​ interval d) ratio

Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate. The subjects in which college students major a) nominal b) ordinal c)​ interval d) ratio

Determine which of the four levels of measurement​ (nominal, ordinal,​ interval, ratio) is most appropriate. Salaries of college professors a) nominal b) ordinal c)​ interval d) ratio