I think the group 2 survey is likely to be biased towards people who are not too keen on zoos since all the values are small.
From group 1 and 3 the mean number of visits are
(4 + 10 + 6 + 3 + 8 + 7 + 9 + 3 + 4 + 7) / 10
= 61/10
mean = 6
Answer:
This is what I always did
1. Order the data from least to greatest
2. Find the median
3. Find the lower quartile
4. Find the upper quartile
And that is how I always found the ranges
The answer is not A because it less than or equal to and 1 is = 1.
The answer is D because -5 is less than 1 and its not equal to 1.
130 * 3 equals 390 so 390 is your answer
