stat quiz please answer

stat quiz please answer

In a normal distribution, ____________ of the data values lie within ____________ standard deviations of the mean.

Group of answer choices

95 % ———— 1

50 % ———— 3

68 % ———— 2

99.7 % ———— 3

Flag this QuestionQuestion 25 pts

The Empirical Rule applies to ____________ distributions, whereas Chebyshev’s Rule applies to ____________ distributions.

Group of answer choices

chart ———— graphical

normal ———— all

random ———— average

frequency ———— linear

Flag this QuestionQuestion 35 pts

The ____________ normal distribution has the largest mean. The ____________ normal distribution has the largest standard deviation.

Group of answer choices

red ———— blue

blue ———— blue

blue ———— red

red ———— red

Flag this QuestionQuestion 45 pts

In a ____________ distribution, ____________ data values are ____________.

Group of answer choices

frequency ———— categorical ———— continuous

random ———— grouped ———— increasing

normal ———— all of the ———— qualitative

normal ———— 50 % of the ———— less than the mean

Flag this QuestionQuestion 55 pts

In a normal distribution :

Group of answer choices

Mean = Mode ≠ Median

Mean = Median ≠ Mode

Mean = Median = Mode

Median = Mode ≠ Mean

Flag this QuestionQuestion 65 pts

The ____________ under the ____________ of a normal distribution is always ____________.

Group of answer choices

variance ———— median ———— symmetric

area ———— graph ———— 100 %

trend line ———— mean ———— positive

outlier ———— chart ———— random

Flag this QuestionQuestion 75 pts

For a normally distributed set of values with a mean of 80 and a variance of 16, approximately 68 % of the values fall between ____________ and ____________.

Group of answer choices

48 ———— 112

72 ———— 88

76 ———— 84

64 ———— 96

Flag this QuestionQuestion 85 pts

In a normal distribution, the mean is 200 and standard deviation of 10. Then, about ____________ of data values fall between ____________ and ____________.

Group of answer choices

99.7 % ———— 180 ———— 220

50 % ———— 100 ———— 150

95 % ———— 190 ———— 230

68 % ———— 190 ———— 210

Flag this QuestionQuestion 95 pts

In a normal distribution with mean of 100 and a standard deviation of 5 , what percentage of data values are bigger than 105 ?

Group of answer choices

32 %

95 %

16 %

68 %

Flag this QuestionQuestion 105 pts

A normally distributed data set has a mean of 15 and a standard deviation of 3. Then, about 95 % of the data values fall between ____________ and ____________.

Group of answer choices

12 ———— 18

6 ———— 24

3 ———— 15

9 ———— 21

Flag this QuestionQuestion 115 pts

In a normal distribution with mean of 100 and a standard deviation of 5 , what percentage of data values are between 90 and 110 ?

Group of answer choices

68 %

50 %

99.7 %

95 %

Flag this QuestionQuestion 125 pts

A normal distribution has a mean of 25 and a standard deviation of 3. Then, about ____________ of data values fall between ____________ and ____________.

Group of answer choices

95 % ———— 16 ———— 31

99.7 % ———— 16 ———— 34

95 % ———— 25 ———— 31

68 % ———— 22 ———— 25

Flag this QuestionQuestion 135 pts

A normal distribution has a mean of 100 and a standard deviation of 10. What percent of data values lie between 80 and 120 ?

Group of answer choices

95 %

99.7 %

34 %

68 %

Flag this QuestionQuestion 145 pts

In a data set, Q1 = 700, Q2 = 720 and Q3 = 800. Then the value 430 is ____________.

Group of answer choices

not an outlier

an extreme outlier

a mild outlier

a fence

Flag this QuestionQuestion 155 pts

If a data value x lies between the lower and upper fences, then x is ____________.

Group of answer choices

not an outlier

a boxplot

a mild outlier

an extreme outlier

Flag this QuestionQuestion 165 pts

In a data set, Q1 = 700, Q2 = 720 and Q3 = 800. Then the value 935 is ____________.

Group of answer choices

not an outlier

a mild outlier

an extreme outlier

a fence

Flag this QuestionQuestion 175 pts

In a data set, Q1 = 700, Q2 = 720 and Q3 = 800. Then the extreme lower fence is equal to ____________.

Group of answer choices

1,100

400

950

550

Flag this QuestionQuestion 185 pts

In a data set, Q1 = 700, Q2 = 720 and Q3 = 800. Then the value 120 is ____________.

Group of answer choices

a fence

a mild outlier

not an outlier

an extreme outlier

Flag this QuestionQuestion 195 pts

The Five Number Summary does NOT contain the ____________.

Group of answer choices

first quartile

standard deviation

median

maximum value

Flag this QuestionQuestion 205 pts

A ____________ is a graphical display of the ____________.

Group of answer choices

scatter plot ———— variance

z-score ———— empirical rule

boxplot ———— five number summary

normal distribution ———— outliers