The amount that two groups of students spent on snacks in one day is shown in the dot plots below. group a group b which measures are $1 greater for group b than for group a?
a the median and the mode
b the mean and the range
c the mean and the median
d the mode and the range

Farmer dave harvested his corn. he stored 5/9 of his corn in one large silo and 3/4 of the remaining corn in a small silo. the rest was taken to a market to be sold. a. what fraction of the corn was stored in the small silo? 10 points

Use this data in the problem below. follow the steps carefully. round to the nearest tenth. lot 3: week 1: 345 week 2: 340 week 3: 400 week 4: 325 step 1. jim enters the data and calculates the average or mean. step 2. jim calculates the deviation from the mean by subtracting the mean from each value. step 3. jim squares each deviation to remove negative signs. step 4. jim sums the squares of each deviation and divides by the count for the variance. step 5. jim takes the square root of the variance to find the standard deviation.

Which of these choices show a pair of equivalent expressions?