TEKS.MATH.9-12.IV.D.1

What is the range?

• average
• biggest-smallest
• the middle #
• # happening the most

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TEKS.MATH.9-12.IV.D.1

What is the Mean?
9, 5, 7

• 8
• 11
• 7
• 6

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TEKS.MATH.9-12.IV.D.1

What is the mode of the trout weight?

• 450
• 450.5
• 452
• 460

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TEKS.MATH.9-12.IV.D.1

Four data sets are shown below.
Set 1: {10, 19, 38, 50, 51}
Set 2: {5, 21, 26, 39, 51}
Set 3: {9, 38, 50, 50, 51}
Set 4: {5, 28, 28, 28, 51}
Which data set has the largest standard deviation?

• Set 1
• Set 2
• Set 3
• Set 4

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TEKS.MATH.9-12.IV.D.1

Third Quartile is

• A. a measure used to describe the distribution of data.
• B. also called the upper quartile.
• C. also called the lower quartile.
• D. the sum of the numbers in a set of data divided by the number of pieces of data.

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TEKS.MATH.9-12.IV.D.1

Researches found that boys playing high school football absorb an average of 355 hits to the head with a standard deviation of 80 hits during a season.  What is the probability on a randomly selected team of 48 players that the average number of head hits per player is between 340 and 360?

• .236
• .429
• .571
• .614

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TEKS.MATH.9-12.IV.D.1

Descriptive statistics involves...

• collection, presentation, and description of sample data

• the technique of interpreting the values resulting from the descriptive techniques and making decisions and drawing conclusions about the population

• attempting to provide incorrect information and provide misleading graphs

• using information, numbers, and graphics even when data can't be collected

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TEKS.MATH.9-12.IV.D.1

Find the standard deviation of a binomial distribution with n=50 and p=0.4 (Round to the nearest tenth)

• 4.2

• 3.5

• 12.0

• 6.2

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TEKS.MATH.9-12.IV.D.1

The mean of this data set is 17.8. What would happen to the mean if 40 was added to the data set?

• The mean would not change

• The mean would go up

• The mean would go down

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TEKS.MATH.9-12.IV.D.1

the mean is less than the median

• skewed left

• skewed right

• symmetrical

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TEKS.MATH.9-12.IV.D.1