Chap 4 - collecting, organizing, displaying data

Question 1

2 numerical data types

Answer 1

-categorical
-numerical

Question 2

define categorical data type

Answer 2

-not a number ans

Question 3

define numerical data type

Answer 3

-number ans

Question 4

2 numerical data types

Answer 4

-continuous
-discrete

Question 5

define continuous numerical data type

Answer 5

-no exact no.
-decimals

Question 6

define discrete numerical data type

Answer 6

-exact no.
-whole no.

Question 7

define primary source

Answer 7

first hand info
-she told she about him

Question 8

define secondary source

Answer 8

second hand info
-she told me she told her about him

Question 9

define qualitive

Answer 9

description

Question 10

define quantitive

Answer 10

no.s

Question 11

ways to organize data

Answer 11

-tally tables
-frequency tables
-grouped frequency tables
-stem and leaf
-2 way table
-pictograms
-bar chart
-compound bar chart
-pie chart

Question 12

how to do tally tables

Answer 12

-headings on top
-thing on left side of table
-tallys on right side

Question 13

how to do frequency tables

Answer 13

-headings on top/side
-put frequency in no.s
-used for while collecting data

Question 14

how to do grouped frequency tables

Answer 14

-headings on top/side
-put frequency in no.s
-put things in class intervals

Question 15

how to do stem and leaf

Answer 15

-stem is in 10’s place, can be 2 digit too
-left of stem is digits before 10/s place, right is after 10’s
-cannot skip numbers in stem
-need key: |x|y = xy

Question 16

how to do 2 way tables

Answer 16

-like frequency table
-for 2 or more sets of data

Question 17

how to do pictograms

Answer 17

-use pics
-need key to show how many pics represent something

Question 18

how to do bar chart

Answer 18

-use zig-zag on side to not start from 0
-used for discrete data
-has gaps btw bars

Question 19

how to do compound bar chart

Answer 19

-has more than 1 set of data
-use zig-zag on side to not start from 0
-used for discrete data
-need key to show which data is which

Question 20

how to do pie charts

Answer 20

-25% = 90 angle
-sector no. = fraction x total no.
-sector angle size = fraction x 360
-no. % = fraction x 100%
-find fraction by measuring

Question 21

formula for mean

Answer 21

add all / no. of things

Question 22

how to find median

Answer 22

rearrange from lowest to highest and find middle value

Question 22

how to find mode/ modal

Answer 22

most occurring value

Question 23

formula for range

Answer 23

highest value - lowest value

Question 24

2 data types

Answer 24

-categorical data
-numerical data

Question 25

define numerical data

Answer 25

number ans