Question

Jessica’s Spanish test scores are 98, 74, 88, 83, 91, and 85. Find the range, median, first and third quartiles, and interquartile range of her scores. Use the measures of variation to describe the data.
(SHOW WORK)

Answer 1

Range- 74 to 98

Median- 86.5

First quartile- 83

third quartile- 91

The range is basically asking about the lowest to the highest numbers, and the lowest number was 74, and the highest was 98.

The median was 86.5 because there were two numbers in the middle, so you need to use the average between the two numbers. The numbers were 85 and 88. I added them together and they were 175. You have to divide them by 2, and I got 86.5

The first quartile was 83 because it was like the median between 74 and 85. Same with the third quartile, except that it was between 88 and 98.

I hope it helped!