How to do a n Ac c e le ra te d Ma th Que s tion

Que s tionThis ta b le be low s hows Chris tine 's be s t ja ve lin th rows e a ch ye a r. Dis pla y the da ta on a s c a tte r plot of dis ta nce ve rs us ye a r.

Which of the following s hows a line of be s t fit for the da ta ?

 

Year 1989 1990 1991 1992 1993 1994 1995 1996

Dis ta nce (m) 52 50 51.25 53.25 54.25 52.55 51.5 54.75

S te p 1

• -P re s s th e 'On ' button.

S te p 2

• P re s s th e 'S TAT', th e n th e #1 option, wh ic h h a ppe ns to be 'E d it.‘

S te p 3

• Type in your 'Ye a r' (x) va lue s in to th e L1 c o lumn.

• Type in you 'Dis ta nc e ' (y) va lue s in to th e L2 c o lum n.

• E x:

S te p 4

• P re s s '2nd ' th e n 'Y='. Th e n turn your s ta t p lot to 'On‘.

S te p 5

• G o to th e b la nk c urs or pa g e by pre s s ing '2nd ' th e n 'MODE ‘

S te p 6

• Go to 'S TAT' the n ove r from 'E dit' to 'Ca lc ' a nd pre s s on the fourth option wh ich is LinR e g (a x+b). P re s s '2nd' the n '1 '. The n pre s s the comma button. P re s s '2nd' the n '2 ' followe d by a nothe r comma . P re s s 'VAR S ' the n g o ove r to 'Y-VAR S '. P re s s the firs t option (F unction), the n the firs t option a g a in (Y1). The R e s ult of a ll the work done in 'S te p 7 ' s hould look like th is LinRed(ax+b) L1,L2,Y1.

•

S te p 7

• P re s s 'E NTE R ‘

S te p 8

• P re s s 'G R AP H‘

S te p 9

• P re s s 'Zoom' a nd pre s s th e n in th option (ZoomS ta t).

S te p 10

• You mus t find out wh ic h a ns we r in th e que s tion th a t th e line o f be s t fit re s e m ble s a nd th a t is your a ns we r.