Question

The numbers of trading cards owned by 9 middle-school students are given below (Note that these are already ordered from least to greatest.) 301, 367, 421, 443,451, 487, 543, 570, 593 Suppose that the number 301 from this list changes to 364. Answer the following. It decreases by (a) What happens to the mean? It increases by It stays the same (b) What happens to the median? It decreases by It increases by It stays the same. ? X

Answer 1

Soluton Given that SO, 36, 4Ri, 443,451, 433, 54 3,5o,593 maan maan 301+36ta1 +43 t451 +4?9+ S4.3+SID +59 3 change 30 to 264 364 t367141+4¢8 +451 +434+543+S7otS93 २ 3৭ । PAESEE changed maan- original muan mean - 41- 464 Tocreases by mean b)uefind median 301, 36+,421,4443, 451,48,543,530,595 median median 4 3C36421,3, 45189S43,570,593 3ol clanged to 364 451 it Sayd theSame Median