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41 Cards in this Set
- Front
- Back
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tHE ENTIRE COLLECTION OF INDIVIDUALS ABOUT WHICH INFO IS SOUGHT IS CALLED |
POPULATION |
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A _______ IS A SUBJECT OF A POPULATION |
SAMLPE
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A ______ IS A TYPE OF SAMPLE THAT IS ANALOGOUS TO A LOTTERY |
SIMPLE RANDOM SAMPLE |
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A SAMPLE THAT IS NOT DRAWN BY A WELL DEFINED RANDOM METHOD IS CALLED |
SAMPLE OF CONVINENCE |
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A ________ SAMPLE IS ONE IN WHICH THE POPULATION IS DIVDED INTO GROUPS AND A RANDOM SAMPLE OF GROUPS IS DRAWN |
CLUSTER |
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A _______ SAMPLE IS ONE IN WHICH THE POPULATION IS DIVIDED INTO GROUPS AND A RANDOM SAMPLE IS DRAWN FROM EACH GROUP |
STRATISFIED |
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THE CHARACTERISTICS OF INDIVIDUALS ABOUT WHICH WE COLLECT INFO ARE CALLED |
VARIABLES
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VARIABLES THAT CLASSIFY INDIVIDUALS INTO CATEGORIES ARE CALLED |
QUALITATIVE |
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__________ VARIABLES ARE ALWAYS NUMERICAL |
QUANTITATIVE |
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QUALITATIVE VARIABLES CAN BE DIVDED INTO TWO TYPES ______________ &________________ |
ORDINAL VARIABLES AND NOMINAL VARIABLE |
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A ___________ VARIABLE IS A QUANTITATIVE VARIABLE WHOSE POSSIBLE VALUES CAN BE LISTED |
DISCRETE |
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__________ VARIABLES CAN TAKE ON ANY VALUE IN SOME INTERVAL |
CONTINUOUS |
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IN A __________ EXPERIMENT SUBJECT DO NOT DECIDE FOR THEMSELVES WHICH TREATMENTS THEY WILL GET |
RANDOMIZED EXPERIMENT |
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IN A __________ STUDY, NEITHER THE INVESTIGATOR NOR THE SUBJECTS KNOW WHO IS GETTING WHICH TREATMENT |
DOULBE-BLIND |
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A STUDY IN WHICH THE ASSIGNMENT TO TREATMENT GROUPS IS NOT MADE BY THE INVESTIGATOR IS CALLED |
OBSERVATIONAL |
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_______ ARE HIGHLY UNRELIABLE IN PAR B/C PPL WHO HAVE STRONG OPNIONS ARE MORE LIKELY TO PARTICIPATE |
VOLUNTARY RESPONSE SURVEYS |
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PEOPLE WHO ARE ASKED TO PARTICIPATE IN A STUDY BUT REFUSE TO DO SO ARE CALLED |
NONRESPONSDERS |
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A LARGE SAMPLE IS USEFUL ONY IF IT IS DRAWN BY A METHOD THAT IS LIKELY TO REPRESENT THE _________ WELL |
POPULATION |
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IN A DATA SET THE NUMBER OF ITEMS THAT ARE IN A PARTICULAR CATEGORY IS CALLED |
FREQUENCY |
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IN A DATA SET THE PROPORTION OF ITEMS THAT ARE IN A PARTICULAR CATEGORY IS CALLED |
RELATIVE FREQUENCY |
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WHEN THE RIGHT HALF OF A HISTOGRAM IS A MIRROR IMAGE OF THE LEFT HALF, THE HISTOGRAM IS |
SYMETRIC |
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A HISTOGRAM IS SKEWED TO THE LEFT IF ITS ____LEFT TAIL IS LONGER THAN ITS ______TAIL |
LEFT, RIGHT |
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A HISTOGRAM IS _________ IF IT HAS TWO CLEARLY DISTINCT MODES |
BIMODAL |
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THE __________ OF A CLASS IS THE SUM OF THE FREQUENCIES OF THAT CLASS AND ALL PREVIOUS CLASSES |
CUMULATIVE FREQUENCY |
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THE ________IS CALCULATED BY SUMMING ALL DATA VALUES AND DIVIDING BY HOW MANY THERE ARE |
MEAN |
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THE _________ IS A NUMBER THAT SPLITS THE DATA SET IN HALF |
MEDIAN |
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THE MEDIAN IS RESISTANT B/C ITS NOT AFFECTED MUCH BY |
EXTREME DATA VALUES |
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THE MODE __________IS THE VALUE IN THE DATA SET THAT APPEARS MOST FREQUENTLY |
MODE |
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IF ALL VALUES IN A DATA SET ARE THE SAME, THEN THE SAMPLE VARIANCE IS EQUAL TO |
0 |
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THE STANDARD DEVIATION IS THE SQUARE ROOT OF THE |
VARIANCE |
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FOR A BELL-SHAPED DATA SET, APPROXIMATELY _________ OF THE DATA WILL BE IN THE INTERVAL U-O TO U+O |
68% |
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_______ DIVIDE THE DATA SET APPROX. INTO QUARTERS |
QUARTILES |
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THE MEDIAN IS THE SAME AS THE ________ QUARTILE |
SECOND |
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IF AN EVENT CANNOT OCCUR, ITS PROBABILITY IS ______ |
0 |
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IF AN EVENT OCCURS ITS PROBABILITY IS _______ |
1 |
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THE COLLECTION OF ALL POSSIBLE OUTCOMES OF PROBABILITY EXPERIMENT IS CALLED _______ |
SAMPLE |
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AN OUTCOME OR COLLECTION OF OUTCOMES FROM A SAMPLE SPACE IS CALLED AN _________ |
EVENT |
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THE GENERAL ADDITION RULE STATES THAT P(A OR A)= P(A)+P(B)-___________ |
P(A AND B) |
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IF EVENT A AND B ARE MUTUALLY EXCLUSIVE, THEN P(A AND B)=_______ |
0 |
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GIVEN AN EVENT A, THE EVENT THAT A DOES NOT OCCUR IS CALLED THE _______OF A |
COMPLEMENT |
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HE RULE OF COMPLIMENT STATES THAT P(A^C)= |
1-P(A) |
