X - - ANSWER - A county park has hiking paths with lengths of ...

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What is 3/4 divided by 2/3? - ANSWER 9/8

A county park has hiking paths with lengths of 1.05, 3.6, 3.17, and 2.2 miles. What is the total length, in miles, of hiking paths in the park? - ANSWER 10.02 miles

If there are 2 tablespoons in 1 fluid ounce, how many tablespoons does the following calculation yield?

• fl oz - 1.5 tbsp - ANSWER 6.5 tbsp

Solve for X:

X - 5/4 = 2/3 - ANSWER 23/12

Solve for X:

X+5/3=2/3 - ANSWER -1

Given the inequality:

2y + 6 > 20 Which graph is the solution?

• {{ y < 3 }}
• {{ y > 6 }}
• {{ y > 7 }}
• {{ y < 7 }} - ANSWER {{ y > 7 }} 1 / 4

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*** Anytime you multiply or divide both sides of the inequality by a negative number, you must "flip" or change the direction of the inequality sign

Which graph is the solution for y < 8? - ANSWER {{ unfilled circle on 8, arrow pointing left }}

Which graph is the solution for 4y - 6 > 18?

• {{ y > 4 }}
• {{ y > 6 }}
• {{ y < 4 }}
• {{ y < 6 }} - ANSWER {{ y > 6 }}

What is the correct line graph for y = 3x + 5? - ANSWER (0,5) to (2,11)

** all you do here is pick three numbers and plug into the given slope formula to find the graph.

What is the correct line graph for y = -2x + 9? - ANSWER (0,9) to (4.5,0)

A normally distributed data set has a mean of 25 and a standard deviation of 2.

Which percentage of the data falls between 23 and 25?

A) 34.0

B) 68.0

C) 95.0

D) 99.7 - ANSWER 34.0 2 / 4

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A given data set is normally distributed with a mean of 200 and a standard deviation of 5.

Which two values does 95% of the data fall between?

A) 180-220

B) 185-225

C) 190-210

D) 195-235 - ANSWER 190-210

Median - ANSWER the value in the middle of a data set,

Median of an even data set - ANSWER When there is an even number of values in a set of data, there is no single middle value. That makes it a little more difficult to find the median. In this case, you take the middle two values and add them together. Then you divide the sum of the values by 2.

quartiles - ANSWER values that divide a data set into four equally sized groups

find the 1st, 2nd and 3rd quartiles of the data set

41,57,61,65,67,70,70,74,82,82,82,90,95,112 - ANSWER Q1 Q2 Q3

41,57,61,65,65,67,70,70,74,82,82,82,90,95,112

• find the median of the data set and that will be your Q2
• looking at the bottom half of the data (excluding the mean) find the half wy point for Q1

which is how many numbers there are divided by two rounded up or down. so 7/2=3.5 rounded to 4. so for Q1 the half way point is 65

• repeat for the upper data set
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• Steps to find the interquartile range - ANSWER 1. Put the data set in order from least

to greatest.

• Find the median, or midpoint, of the data set. This can also be called the second quartile

(Q2).

• Identify the median of the lower half of the data set and label it as Q1 (the first quartile).
• Identify the median of the upper half of the data set and label it as Q3 (the third quartile)
• Subtract Q1 from Q3 to determine the interquartile range, or IQR.

find IQR

100,37,12,20,53,10,20,50,35,30,32,35,72,25 - ANSWER Q1 Q2=33.5 Q3

10,12,20,20,25,30,32,35,35,37,50,53,72,100

• put data set in order
• find the quartiles, even number of data sets to find the mean you add the two data sets

together than divide by two which gives you 33.5

• Splitting the data down the middle between 32 and 35 gives you your Q2
• from 10 to 32 gives you your lower data set with 7 total data sets divided by two gives you

a rounded number of 4 which means that the fourth data set is the median of the lower data set which is 20. 20 is your Q1

• repeat for Q3

6. IQR = 50-20=30

find IQR

41,57,61,65,67,70,70,74,82,82,82,90,95,112 - ANSWER Q1 Q2 Q3

41,57,61,65,65,67,70,70,74,82,82,82,90,95,112

82-65=17

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