Guided PracticeGuided Practice

Sig Fig/Precision/Accuracy- 3Sig Fig/Precision/Accuracy- 3

Question 1 (Sig Fig)Question 1 (Sig Fig)

205=205=

Question 1 (Sig Fig)Question 1 (Sig Fig)

205= 3 sig figs205= 3 sig figs

Question 2Question 2

0.00272=0.00272=

Question 2Question 2

0.00272= 3 sig figs0.00272= 3 sig figs

Question 3Question 3

2860=2860=

Question 3Question 3

2860= 3 sig figs2860= 3 sig figs

Question 3Question 3

2860= 3 sig figs2860= 3 sig figs

Though 2860. = 4 sig figsThough 2860. = 4 sig figs

Question 4Question 4

0.004050=0.004050=

Question 4Question 4

0.004050= 4 sig figs0.004050= 4 sig figs

Question 4Question 4

0.004050= 4 sig figs0.004050= 4 sig figs

though 0.00405 = 3 sig though 0.00405 = 3 sig figsfigs

Question 5Question 5

0058 =0058 =

Question 5Question 5

0058 = 20058 = 2

Querstiuon 6Querstiuon 6

Do you count the leading Do you count the leading (beginning zero’s)?(beginning zero’s)?

Question 6Question 6

Do you count the leading Do you count the leading (beginning zero’s)?(beginning zero’s)?

NO---never….whether there NO---never….whether there is a decimal or notis a decimal or not

Question 7Question 7

Do you count the zero’s at Do you count the zero’s at the end?the end?

Question 7Question 7

Do you count the zero’s at Do you count the zero’s at the end?the end?

---ONLY when there is a ---ONLY when there is a decimal in the problemdecimal in the problem

Question 8Question 8

Do you count the zeros in Do you count the zeros in the middle (that are the middle (that are sandwiched between 2 sandwiched between 2 numbers)?numbers)?

Question 8Question 8

Do you count the zeros in the Do you count the zeros in the middle (that are sandwiched middle (that are sandwiched between 2 numbers)?between 2 numbers)?

Always – best part of the Always – best part of the sandwich (YUM)sandwich (YUM)

Question 9Question 9

326 =326 =

Question 9Question 9

326 = 3.26 * 10326 = 3.26 * 1022

Question 10Question 10

0.00087=0.00087=

Question 10Question 10

0.00087= 8.7 * 100.00087= 8.7 * 10-4-4

Question 11Question 11

12.4=12.4=

Question 11Question 11

12.4= 1.24 * 1012.4= 1.24 * 1011

Question 12Question 12

376590=376590=

Question 12Question 12

376590= 3.7659 * 10376590= 3.7659 * 1055

Question 13Question 13

0.261=0.261=

Question 13Question 13

0.261= 2.61 * 100.261= 2.61 * 10-1-1

Question 14Question 14

When you don’t see a When you don’t see a decimal point, it is decimal point, it is understood to be at understood to be at the___________?the___________?

Question 14Question 14

When you don’t see a When you don’t see a decimal point, it is decimal point, it is understood to be at the understood to be at the ENDEND??

Question 15Question 15

You count how many hops it You count how many hops it takes to get from the old takes to get from the old decimal place to the decimal place to the _________ decimal place._________ decimal place.

Question 15Question 15

You count how many hops it You count how many hops it takes to get from the old takes to get from the old decimal place to the decimal place to the NEWNEW decimal place.decimal place.

Question 16Question 16

Convert 56.4 meters to Convert 56.4 meters to centimeterscentimeters

Question 16Question 16

Convert 56.4 meters to Convert 56.4 meters to centimeterscentimeters

Question 16Question 16

Convert 56.4 meters to Convert 56.4 meters to centimeterscentimeters

Question 16Question 16

Convert 56.4 meters to Convert 56.4 meters to centimeterscentimeters

Question 16Question 16

Convert 56.4 meters to Convert 56.4 meters to centimeterscentimeters

Question 16Question 16

Convert 56.4 meters to Convert 56.4 meters to centimeterscentimeters

Question 16Question 16

Convert 56.4 meters to Convert 56.4 meters to centimeterscentimeters

Precision/AccuracyPrecision/Accuracy

Question 1Question 1

(2,1,2.3,2.0) and the mass was (2,1,2.3,2.0) and the mass was actually 1actually 1

Precise =Precise = Accurate =Accurate =

Question 1Question 1

(2,1,2.3,2.0) and the mass was (2,1,2.3,2.0) and the mass was actually 1actually 1

Precise = YesPrecise = Yes Accurate =Accurate =

Question 1Question 1

(2,1,2.3,2.0) and the mass was (2,1,2.3,2.0) and the mass was actually 1actually 1

Precise = YesPrecise = Yes Accurate = NOAccurate = NO

Question 2Question 2

When you triple the When you triple the concentration of 0.0090 concentration of 0.0090

Question 3Question 3

What is the mean of (28, 13, 21, What is the mean of (28, 13, 21, 45, 62)?45, 62)?

Question 3Question 3

What is the mean of (28, 13, 21, What is the mean of (28, 13, 21, 45, 62)?45, 62)?

Mean = AverageMean = Average

28 + 13 + 21 + 45 + 62 = 16928 + 13 + 21 + 45 + 62 = 169

Question 3Question 3

What is the mean of (28, 13, 21, What is the mean of (28, 13, 21, 45, 62)?45, 62)?

Mean = AverageMean = Average

28 + 13 + 21 + 45 + 62 = 16928 + 13 + 21 + 45 + 62 = 169

169 / 5 = 33.8169 / 5 = 33.8

Question 4Question 4

What is the mode of (11, 12, 9, What is the mode of (11, 12, 9, 11, 8, 9, 16)?11, 8, 9, 16)?

Question 4Question 4

What is the mode of (11, 12, 9, What is the mode of (11, 12, 9, 11, 8, 9, 16)?11, 8, 9, 16)?

11 and 9 (2 modes are 11 and 9 (2 modes are shown)shown)

Question 5Question 5

What is the median of (18, 21, What is the median of (18, 21, 15, 19, 61)?15, 19, 61)?

Question 5Question 5

What is the median of (18, 21, What is the median of (18, 21, 15, 19, 61)?15, 19, 61)?

Put it in order first (15, 18, 19, Put it in order first (15, 18, 19, 21, 61)21, 61)

Median is 19Median is 19

Question 6Question 6

Label the independent and Label the independent and dependent variable….dependent variable….

Question 6Question 6

Label the independent and Label the independent and dependent variable….dependent variable….

Question 6Question 6

Label the independent and Label the independent and dependent variable….dependent variable….