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The table below shows data from a survey about the amount of time students spend doing homework each week. The students were either in college or in high school: High Low Q1 Q3 IQR Median Mean σ College 50 5 7.5 15 7.5 11 13.8 6.4 High School 16 0 9.5 14.5 5 13 10.7 5.3 Which of the choices below best describes how to measure the spread of this data? (Hint: Use the minimum and maximum values to check for outliers.) Both spreads are best described with the IQR. Both spreads are best described with the standard deviation. The college spread is best described by the IQR. The high school spread is best described by the standard deviation. The college spread is best described by the standard deviation. The high school spread is best described by the IQR.
I've done this before...
Are you in FLVS?
ok 1 min
The answer is C. I just checked :]
The table below shows data for a class's mid-term and final exams: Mid-Term Final 96 100 95 85 92 85 90 83 87 83 86 82 82 81 81 78 80 78 78 78 73 75 Which data set has the smallest IQR? They have the same IQR Mid-term exams Final exams There is not enough information
can you help with this one?
Yes give me 1 min!
I don't have the same numbers sorry! :[
Its all good, so can you help me solve it?
Um yes give me 1 min to try to solve it :]
Never mind i checked the numbers again its is the same numbers lol. The answer is Final Exams :]
The box plots below show student grades on the most recent exam compared to overall grades in the class: two box plots shown. The top one is labeled Class. Minimum at 68, Q1 at 71, median at 84, Q3 at 89, maximum at 100. The bottom box plot is labeled Exam. Minimum at 55, Q1 at 76, median at 85, Q3 at 94, maximum at 100. Which of the following best describes the information about the medians? The class and exam medians are almost the same. The exam median is much higher than the class median. The class and exam Q3 are the same, but the exam has the lowest median. The low outlier on exams pulls the median lower.