step 2 find the difference in the medians: 80 - 70 = 10\nstep 3 find the interquartile range for chemistry…

step 2 find the difference in the medians: 80 - 70 = 10\nstep 3 find the interquartile range for chemistry: 85 - 80 = 5 find the interquartile range for biology: 80 - 70 = 10\nstep 4 find the difference in the interquartile ranges: 10 - 5 = 5\nlauren determined that the difference in the medians is greater than the difference in the interquartile ranges. which explains laurens error?\nlauren made her first error in step 1 because the median is 85 for chemistry and 80 for biology.\nlauren made her first error in step 1 because the median is 60 for chemistry and 60 for biology.\nlauren made her first error in step 3 because she should have used 90 - 55 = 35 for chemistry and 90 - 50 = 40 for biology.\nlauren made her first error in step 3 because she should have used 85 - 60 = 25 for chemistry and 80 - 60 = 20 for biology.

step 2 find the difference in the medians: 80 - 70 = 10\nstep 3 find the interquartile range for chemistry: 85 - 80 = 5 find the interquartile range for biology: 80 - 70 = 10\nstep 4 find the difference in the interquartile ranges: 10 - 5 = 5\nlauren determined that the difference in the medians is greater than the difference in the interquartile ranges. which explains laurens error?\nlauren made her first error in step 1 because the median is 85 for chemistry and 80 for biology.\nlauren made her first error in step 1 because the median is 60 for chemistry and 60 for biology.\nlauren made her first error in step 3 because she should have used 90 - 55 = 35 for chemistry and 90 - 50 = 40 for biology.\nlauren made her first error in step 3 because she should have used 85 - 60 = 25 for chemistry and 80 - 60 = 20 for biology.

Answer

Explanation:

Step1: Analyze median values

Median values are not given as 85 for chemistry and 80 for biology in correct data. We need to check if median values are wrong - they are key for step 2.

Step2: Analyze inter - quartile range (IQR) calculations

IQR is calculated as (Q_3 - Q_1). Lauren's IQR calculations in step 3 seem wrong as well. We need to check correct (Q_3) and (Q_1) values for both subjects.

Step3: Check options

Option 1: Median values are incorrect as stated. Option 2: Given median values (60 for both) are wrong. Option 3 and 4: Focus on wrong IQR calculations. But first error is in median calculation.

Answer:

Lauren made her first error in step 1 because the median is 85 for chemistry and 80 for biology.