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Elementary Statistics Chapter 1 Test Flashcards

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10784505027Q. StatisticsThe Science of conducting studies to: collect, organize, analyze, summarize, and draw conclusions from data.0
10784505031Q. What are the two major categories of data?1.Qualitative Variables 2. Quantitative Variables {2 types of Quantitative}1
10784505032Qualitative VariablesVariables that have distinct categories according to some characteristics or attributes Example: ,gender, religious preferences, geographical location,2
10784505033Quantitative VariablesVariables that can be counted or measured 2 types: Discrete Variable and Continuous Variable3
10784505034Q. What type of data is: Your License Plate Number?Qualitative (distinct categories according to some characteristics or attributes)4
10784505035Q. What type of data is: The amount of money you have with you?Quantitative (Variables that can be counted or measured)5
10784505036Q. What type of data is: Your scores on the ACT test?Quantitative (Variables that can be counted or measured)6
10784505037Q. What type of data is: Your best friends name?Qualitative (distinct categories according to some characteristics or attributes)7
10784505038Q. Quantitative Data has two SUB-CATEGORIES. What are the two SUB-CATEGORIES?1. Discrete Variable 2.Continuous Variable8
10784505039Discrete Variablesassumes values that can be counted; countable Example: countable numbers, number of children in a family, students in class,number of calls received by switchboard operator each day for a month.9
10784505040Continuous VariablesCan assume infinite number of values between any two specific values. They are obtained by MEASURING. Often include fractions and decimals. Example: heights, weight, body temperatures, age10
10784505041Q. True or False: Blood pressure is an example of continuous data.True11
10784505042Q Fill in blank The score students will make on this test is an example of .......dataDiscrete12
10784505043Q. Fill in blank The number of coins currently in your purse or pocket is an example of.........data.Discrete13
10784505044Q. Fill in blank Your age is an example of .........dataContinuous14
10784505045Q. Name the 4 levels of MEASUREMENT?1.Nominal-"name", no order or ranking 2.Ordinal-Can be placed in categories/ordered/ ranked/ratings. 3.Interval- there is NO meaningful ZERO Example: SAT score Dates, Times 4.Ratio- A TRUE ZERO exist15
10784505046Nominal Level of MeasurementData can be placed into categories, these categories can be ordered and ranked. Examples:student evaluations, guest speakers ranked..superior,average,poor. homecoming floats ranked 1st,2nd,3rd.16
10784505047Ordinal Level of MeasurementClassify data into categories that can be ranked; however,precise differences between the ranks do not exist. Example: people are classified according to their build(small, medium,or large), a large variation exist among the individuals in each class. Other examples are letter grades ( A,B,C,D,F)17
10784505048Interval Level of MeasurementRanks data,and precise difference between units of measurement do exist; however, there is NO meaningful ZERO. Example: temperature18
10784505049Ratio Level of MeasurementAll characteristics of Interval measurement; and there TRUE ZERO exist. In addition, true ratio exist when the same variable is measured on two different members of the population. Example: your real age19
10784505050Q. What level of measurement is: Temperature on a Celsius scale?Interval20
10784505051Q. What level of measurement is: The grades o this quiz?Ratio21
10784505052Q. What level of measurement is: The hair color of each student in this class?Nominal22
10784505053Q. What level of measurement is: The names of each student listed in order of age from oldest to youngest?Ordinal23
10784505054Q. Define Populationconsist off ALL subjects that are being STUDIED;entire24
10784505055Q. Define Samplea group of subjects selected from a population; subgroup25
10784505056Q. Define Random SampleA Sample in which ALL members of a POPULATION have an EQUAL chance of being selected; Every subset has the same chance.(this is the hardest to do)26
10784505057How many Basic sampling methods are used? List them:There are 4 basic sampling methods 1. Random Sampling 2.Systemic Sampling 3. Stratified Sampling 4.Cluster Sampling Another method use id Convenience Sampling27
10784505058Q. Give the name of the sampling method: I subdivided the population into 5 groups: Freshman, sophomores, juniors, seniors, and graduates students. I randomly choose 2 of those 5 groups and then sample everyone in those two groups?Cluster Sample28
10784505059Q. Give the name of the sampling method: I subdivided the population into 5 groups: Freshman, sophomores, juniors, seniors, and graduates students. I randomly sample 12 students from each of the 5 groups?Stratified Sampling29
10784505060Q. Give the name of the sampling method: I stand outside the library to ask students their opinion of library services. I decide to sample every 25th student that comes out until i get a sample of 15. I randomly choose a number between 1 and 25 ( for argument sake lets say it turns out to be 16) So I sample the 16th student that comes out and the 25th student that comes out.Systematic Sampling30
10784505061Q. Give the name of the sampling method: I ask a question of my 20 best friends on campus.Convenience Sampling31
10784505080True or False: The collection of all cars registered in the United States is an example of a populationTrue32
10784505081For a study in which subjects are treated with a new drug and then observed, is this study observational or is it an experiment?Experimental33
10784505062The author surveyed all of his students to obtain sample data consisting of the number of credit cards students possess. This is an example of which type of sampling?Convenience34
10784505064Six different health plans were randomly selected, and all of their members were surveyed about their satisfaction with their plan. This is an example of which type of sampling?Cluster35
10784505067Are movie ratings of G, PG-13, and R quantitative or categorical data?Categorical36
10784505068Convert 8.4% to equivalent fraction and decimal21/250; 0.08437
10784505069Alex went on a 120-mile canoe trip. On the first day they traveled 35 miles. About what percent of the total distance did they travel?About 30%38
1078450507040 is 25% of what number1. 16039

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