Question

1.What is a primary function of statistical analysis?

Planning when observations will be made.

Organizing and summarizing data.

Identifying a population

2."It is necessary to use inferential statistics when conducting a census." This statement is

true.

false.

When a curve has a tail to the left but no tail to the right, it is said to have a

positive skew.

negative skew

"The range is a statistic that describes central tendency." This statement is

true.

false.

Which is the appropriate description of the process for finding the 95% Confidence interval ?

Standard devaition +/- the mean

Sample statistic +/- margin of error

margin of error +/1 the sample statistic

No answer text provided

If blood type data was recorded for 15 individuals as shown in the raw data, what would be the frequency of type B?

A,A,O,O,O,AB,A,B,B,B,AB,,O,O,B,AB

3

4

5

6

Of the sampling techniques the one that is most likely to create bias is:

random sampling

systematic sampling

cluster sampling

convenience sampling

Twenty students were asked ho many pets they had (excluding fish). Use the raw data below to find the cumulative frequency for 3 pets.

0,2,2,3,1,1,9,4,2,5,0,6,10,3,2,5,4,2,0,0

2

3

11

13

In a data set, 50% of the data lies between the 25th percentile and the 75th percentile. This is know as the:

variance

interquartile range

range

dispersion

Would you expect a distribution of the incomes of all people in a doctor's office including patients, employees and physicians to be:

normal

Right-skewed

Left-skewed

No answer text provided.

How many modes would you expect from a distribution of hours spent watching football on TV for 500 randomly selected Americans.

none

one

two

three

Answer 1

My dear student you posted multiple questions as per HOMEWORKLIB RULES I have solved the first 8 questions . thank you.