Zach's Scribe

today in math class we got a new work booklet, this time it is green. it is about integers, without the (training wheels). three questions from it are 6+8=14, 14+8=22, -4-3=-7.
we had home work to. we had to do all the even numbers. One of them is 5-(-8)-(7)+5=+9.

Zach's Measure of Central Tendancy

MEAN

• the sum of all data in a set of data
• divided by the number of numbers in the set of data
• the average of a set of data

3,4,5,6,7,9.10,11 (3+4+5+6+7+9+10+11) /8= 6.875

the mean is 6.875

MEDIAN

• the middle number in a set of data

1,2,(4),5,6

• (4) is the median in this set of data

MODE

• the most frequent occuring numbers in a set of data
• if there are no most ocurring numbers there is no mode

6,6,6,6,6,6,6,6,6,6,6,6,6,9,13,13,15,19,22,22,22,22,22,23, in this set of

data (6) is the mode.

1,2,3,4,5,6 in this set of data there is no mode

RANGE

• the range is the highest value number subtracted from the lowest value number.
• there is always a RANGE in a set of data.
• second easiest

1,3,6,8, 9,10 1-10=9 the range is 9

zach's Measure of Central Tendency

mean