Reading a Graph on the Ged Test
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A school commune includes five high schools - Burr, Colfax, Garner, Gerry, and Wallace. Seniors at all five high schools took the California country loftier schoolhouse go out exam this year - the results are reflected in the above bar graph.
Which of the following questions cannotexist answered about the math scores of the v schools by examining the above graph?
Possible Answers:
What was the difference this year betwixt the median math score of the highest-performing school of the five and that of the everyman-performing schoolhouse?
Of the five schools, which schoolhouse's median math score was the lowest this year?
Of the five schools, which school's median score improved the nigh from final year?
Of the five schools, how many had median math scores to a higher place seventy this year?
Correct reply:
Of the five schools, which school's median score improved the well-nigh from last year?
Explanation:
The question "Of the v schools, which school's median score improved the virtually from last twelvemonth?" requires knowledge of concluding yr'due south median math scores, which are not given by the graph. The other three questions just require knowledge of this yr's scores, which are given.
Refer to the above bar graph. The exit examination was given to all high schoolhouse seniors in the above 5 schools.
Juanita attended Wallace High School and scored a 75 on the math portion. Wallace High School had 188 seniors take the exam. How many seniors could Juanitia take feasibly outscored?
Right answer:
Explanation:
The median score at Wallace was 69, then Juanita scored higher up the median. By definition, she outscored at least half the seniors, which means that she must have outscored at least
Refer to the above bar graph.
Three cousins took this examination this year- Carlos scored 67, Alberto scored 70, and Julio scored 71. All 3 attended the same high school and all three scored below the median for their school. Which of the following high schools could they have attended?
Possible Answers:
Wallace
Gerry
Garner
Burr
Explanation:
Julio scored the highest of the three with 71, so we are looking for a loftier school whose median score was above 71. Of the four choices, only Garner fits this criterion.
The to a higher place bar graph compares the median math scores from both 2012 and 2013 for an examination administered in the five loftier schools of a school district.
How many of the 5 schools did not see their median math score achieve at least 70 in either 2012 or 2013?
Explanation:
Of the five schools, only Burr had median scores below 70 in both 2012 and 2013. The correct choice is "ane".
Refer to the above bar graph.
How many students at Polk Heart Schoolhouse scored college than 600 on the math portion of the SCAT?
Right reply:
Caption:
The number of students who scored in the 601-700 range is xvi; in the 701-800 range, x. Add them to get 26 students total.
Refer to the above bar graph.
What percentage of the students accomplished a score in a higher place 500?
Right answer:
Explanation:
40 students achieved a score of 501-600; 16 achieved a score of 601-700; 10 achieved a score of 701-800. Add these:
The number of students who took the test is the sum of the students who finished in the six ranges:
The question is at present to find out what percentage 66 is of 120, which can be calculated as follows:
Refer to the above graph. Clarissa, a sixth grader at Polk, scored a 673 on the math portion of the SCAT. Which of the following couldhave been her rank amongst the students?
Right answer:
Explanation:
By making a 673, Clarissa finished in the 2d-highest range shown (601-700). She was outscored past at least 10 students (the ones in the 701-800 range), but by at most 25 students (the 10 in the 701-800 range plus the other fifteen in the 601-700 range). She finished between 11th and 26th, inclusive, then the just plausible choice is 14th.
Refer to the above graph. Yasmin, a sixth grader at Polk, outscored 89 of the students who took the exam. Which of thesecould her score have been?
Right answer:
Explanation:
Her score fell in the range betwixt 501 and 600, and then of the four choices, the only plausible score was 565.
Which question cannotbe answered about Polk Heart School sixth graders' performance on the math portion of the SCAT by looking at the above bar graph?
Possible Answers:
How many students scored above 300 on the test?
What percent of the students scored from 401 to 600 on the test?
What fraction of the students scored at 600 or on the test?
What was the lowest score on the exam?
Right answer:
What was the lowest score on the test?
Explanation:
The lowest score is not indicated anywhere on the graph, and so the question "What was the lowest score on the test?" is the one that cannot exist answered. The other three tin can be adamant, in part or completely, by calculation the number of students in ane or more ranges, and in ii cases, also calculation the number of students total.
Which question can be answered almost Polk Middle School sixth graders' performance on the math portion of the SCAT by looking at the above bar graph?
Possible Answers:
What was the mode of the scores on the test?
What was the mean score on the examination?
How many students took the test?
What was the median score on the exam?
Correct reply:
How many students took the exam?
Caption:
The graph just provides information about how many students scored in each range (201-300, 301-400, etc.) on the examination; it provides no information virtually the hateful, median, or style. The only question that tin can be answered is the number of students total who took the exam - this can be answered by adding the numbers on top of the confined.
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