Distribution Math

What is the the total area under the standard normal distribution curve?

• 100

• 25

• .5

• 1

The distances male long jumpers for State College jump are approximately normal with a mean of 263 inches and a standard deviation of 14 inches.  
Suppose a male long jumper's jump ranked in the 75th percentile.  How long was his jump?

• 0.67 inch

• 263 inches

• 272.44 inches

• 277.25 inches

An algebra 2 test has 6 multiple choice questions with four choices with one correct answer each. If we just randomly guess on each of the 6 questions, what is the probability that you get exactly 3 questions correct?

• 0.962

• 0.132

• 0.831

• 0.250

The table shows the scores of 40 students in their Math Quiz. What is the frequency of the scores from 21-25?

• 9

• 8

• 15

The table shows the scores of 40 students in their Math Quiz. What is the class interval of the given data?

• 5

• 6

• 7

It is a systematic way of presenting data using a table.

• Class Interval

• Collecting Data

• Frequency Distribution Table

The difference between the highest and lowest number in a data set.

• Range

• Class Size

• Class Interval

The number of times the data value occurs is called ____________.

• Range

• Frequency

• Class Interval

The size of each class into which a range of a variable is divided.

• Range

• Class Interval

• Class Size or Number of Class Interval

Given above are marks obtained by 20 students in Math out of 25. Find the value of x.

• 4

• 5

• 7

• 8