Algebra Word Problems Flashcards

1
Q

Is, will be, yields

A

=

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2
Q

What number, how much

A

“N” or any variable

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3
Q

Opposite of x

A

-x

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4
Q

Ratio of x to y

A

X/y

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5
Q

A number n less 2

A

N-2

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6
Q

A number n less than 2

A

2- n

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7
Q

A number reduced by 2

A

n-2

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8
Q

Of

A

Times

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9
Q

The _ is the average

To find:

A

Mean

Add all outcomes and divide by total number of outcomes

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10
Q

The number in the middle when the data set is arranged in order from least to greatest

A

Median

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11
Q

MOST frequent outcome in data set

*Most common, can be more than one

A

Mode

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12
Q

Difference btwn highest and lowest number in the data set

A

Range

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13
Q

Data points much different than other data points

Raise the value of the mean
Can skew the data

A

Outliers

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14
Q

If distribution is skewed left (outliers are smaller numbers) the _ will be less than the median and the _ is the best indicator

A

Mean is less

Media is the best indicator

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15
Q

If distribution is skewed right (outliers are large numbers) the _ will be greater than the median and the _ is the best indicator

A

Mean will be greater

Median best indicator

Mean is pulled toward longer “tails” of the data

The set includes extreme values that are to the right or high. Median is unaffected but mean would be greater

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16
Q

Show data using the median, range and outliers

Helpful to show how data is distributed

A

Box plots or box and whisker plots

17
Q

Bar graph showing continuous data over time

Display frequency of data using dots and can be used to observe distribution of data in a set

A

Histogram

Dot plots

18
Q

Use points to show relationships btwn two variables

One variable is on the x axis and the other on th y axis

A

Scatter plot

19
Q

Show changes in data by commenting the points on a scatter plot using a line

Ex: measure time, temperature changes over a day, school attendance

A

Line graphs

20
Q

Show parts of a whole. Each slice represents a percentage of a whole

A

Circle graph or pie chart

21
Q

The likelihood that something will happen

Expressed as a fraction

A

Probability

22
Q

Probability always btwn

No chance of something occurring:

100% chance of something occurring:

A

0 and 1

Probability is 0

Probability is 1