The sum of the data under the curve is equal to 1.
What is Density Curve?
100
3 features of normal distributions
What is symmetric, single peaked, bell-shaped, described by its mean and standard deviation.
100
The equation for standardized value
What is Z = x - µ /ơ
100
Graph where Mean=Median
What is Normal Curve?
100
______ <--> Z-score <--> ____
What is x-values, %?
200
The Mean= 0 and the Standard Deviation=1.
What is a standard normal curve?
200
SAT n(500,100)
What score is at the 35th percentile?
What is 461?
200
N(64.5, 2.5)
If x = 60. Find the z-score.
What is 1.8?
200
Graph Z>2.85
Which direction do you shade the percentile?
What is shade the area to the right?
200
Calculator function where you list (lower bound, upper bound, mean, standard deviation)
What is Normalcdf?
300
Percent of the distribution that is at or to the left of the observation
What is Percentile?
300
The percentages used in every normal distribution using the 68-95-99.7 Rule
What is 0.15%, 2.5%, 16%, 50%, 84%, 97.5%, and 99.85%?
300
SAT N(500, 100) ACT N(18, 6)
The student scored a 720 on the SAT and 18 on the ACT.
The score that is more appealing to universities...
What is SAT score?
300
True or False
A density curve can be used to help define the shape of a bar graph.
What is False?
300
Calc. function that includes (area to left, mean, standard deviation)
What is Invnorm.?
400
Where the slope changes, usually 1 standard deviation from the mean.
What is the point of inflection?
400
N (69, 2.5)
The X value at 0.15%
What is 61.5?
400
SAT N(500, 100)
Percent score between 500 and 670 on a test.
What is 45.54%?
400
13.4, 34.4, 11.1, 39.7, 25.4, 87.9, 65.3, 76.8, 39.2, 22.9, 54.8, 12
Does the data construct a normal or density curve?
What is Density Curve?
400
___ = Range/6
What is Estimated Standard Deviation
500
Turning your variable (that has a normal distribution) into one that has a standard normal distribution.
What is "to standardize"?
500
The heights of adult women are approximately normally distributed about a mean of 65 inches with a standard deviation of 2 inches. If Ronda is at the 99th percentile in height for adult women, than her height, in inches, is closest to ___.
What is 71?
500
The distribution of the weights of loaves of bread from a certain bakery follows approximately a normal distribution. Based on a very large sample, it was found that 10% of the loaves weighed less than 15.34 ounces, and 20% of the loaves weighed more than 16.31 ounces. What are the mean and standard deviation of the distribution of the weights of the loaves of bread?
What is Mean= 15.93
Standard Deviation= 0.46?
500
In a normal distibution, what percent of the data falls within 1.3 standard deviation of the mean?