# Document 14147122

1.1

What  is  Statistics?

Statistics

is  the  study  of  how  to  _____________________,  _________________________,

_________________________,  and  ____________________  numerical  information  from  data

Individuals

are  the  ______________________________________________

Variable

is  the  ________________________  of  the  individual  to  be  ____________________  or

________________________.

Example:  If  we  wanted  to  do  a  study  about  people  who  have  Mr.  Graham  for

Statistics  ________________________  would  be  the  individuals.      A  ____________________  could

be  height,  weight,  gpa,  Elementary  School,  etc.

Quantitative  Variable:

Ex:

Qualitative  Variable:

Ex:

Population  Data

:

Ex:

Sample  Data:

Ex:

Levels  of  Measurement

Nominal:  “In  name  only”

Data  only  describes  a  quality  or  name  but  would  not   make  sense  to  put  the  data  in  any  order  because  no  one  is  “greater”  or  “less”  than   the  other

Ex:

Ordinal

:  Data  can  be  put  in  ORDER  but  the  actual  differences  between  values  either   can’t  be  determined  or  is  meaningless.

EX:

Interval

:  Just  like  ordinal  BUT,  there  are  meaningful  differences  between  the  daa   values.    There  may  not  be  an  intrinsic  ZERO  or  STARTING  POINT.    Differences  are   meaningful  but  ratios  are  not.

EX:

Ratio

:  Highest  level  of  measurement.    We  can  order,  take  differences  and  also  find   the  ratio.    It  makes  sense  that  one  data  value  is  “twice  as  large”  as  another  for   example.    IT  INCLUDES  AN  INHERENT  ZERO  OR  STARTING  POINT.

EX:

Descriptive  Statistics

:    Organizes,  pictures,  and  summarizes  information  from

samples  or  populations.

Inferential  Statistics

:    involves  methods  of  using  information  forma    sample  to   draw  conclusion  regarding  the  population.