A small portion or a subset of the population on which data is collected for conducting statistical analysis is called __________. a census a sample a data set a population

Variables Age at which first child was born           AGEKDBRN         Survey question: How old were you when your first child was born?  Respondent’s sex                                  SEX    Respondent’s sex (1 = male or 2 = female)   Descriptive Statistics: Sex n Mean Std. Dev. Min. Q1 Median Q3 Max. IQR male 679 25.5 5.91 12 21 25 29 51 8 female 987 23.4 5.45 13 19 22 27 45 8   Descriptive Statistics: Group Sample Size Mean Std. Dev. female 987 23.44 5.45 male 679 25.55 5.91 Question: Find the 95% confidence interval for the difference between men and women in the mean age at which their first child was born and report the results below. Find the confidence interval for the difference  (mean for men – mean for women). Describe in words what the confidence interval shows about the difference in the mean age at which men and women have their first child.

Length of School Years The lengths of school years in a sample of various countries in the world are shown. Find the mean, median, midrange, and mode of the data. 250 241 229 213 199 184 177   Find the mean. Rounding rule for the mean: round to one more decimal place than the data as needed. Mean Find the median. Median Find the midrange. Midrange Find the mode(s).   If there is more than one mode, separate them with commas. Select "None" if applicable.   Mode(s)

Researchers wondered whether the size of a person's brain was related to the individual's mental capacity. They selected a sample of 5 females and 5 males and measured their MRI image pixel counts and IQ scores. Females Males MRI IQ MRI IG The data is reported to the right. Complete parts (a) through (d) below 139 858,472 140 955,003 935,494 924,059 1.079.550 1,001.121 Click the icon to view the critical values table. 991,305 138 141 857,782 833,868 790,619 133 135 132 141 135 140 AMRI 1,080,000- AIO 145 AIO 145- AMRI 1,080,000 780,000 130 130 780,000 130 780,000 780,000 130 1,080,000 145 1,080,000 MRI 145 MRI (b) Compute the linear correlation coefficient between MRI count and IQ. Are MRI count and IQ linearly related? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Round to three decimal places as needed.) A. Yes, MRI count and IQ are linearly related since the linear correlation coefficient is O B. No. MRI count and IQ are not…

Fill in the number corresponding to the phrase that best describes each of the items the following table. TERMS AND CONCEPTS NUMBER Qualitative data 11 Quantitative data   Discrete quantitative data   Continuous quantitative data   Discrete Random Variable   Continuous Random Variable   Categorical Variable   Numerical Variable   Population   Parameter   Sample   Statistic   Random Variable   Data     a variable that takes on values that are names or labels   2.variables that take on values that are indicated by numbers   3.a set of observations (a set of possible outcomes)   4.all individuals, objects, or measurements whose properties are being studied   5.a value for an attribute that is a number   6.data that is the result of measuring (such as distance traveled or weight of luggage)   7.a subset of the population studied   8.a random variable whose outcomes are counted   9.a value that…

A data set is summarized in the frequency table below. The data set contains a total of 30 data values. What is the missing frequency?   Value Frequency 1 5 2 3 3 4 4 6 5 □ 6 2 7 3 8 4

How do you find the chi square test statistic & the p value?

Rainfall (inches) Number of Years20 - 24                       125 - 29                       330 - 34                       535 - 39                       840 - 44                       545 - 49                       250 - 54                       055 - 59                       1 Draw a histogram, a frequency polygon and cumulative frequency polygon forthis data.

How do a parameter and a statistic​ differ?       Question content area bottom Part 1 Choose the correct answer below.     A. A parameter is a numerical measurement of a​ sample; a statistic is a numerical measurement of a population.   B. A parameter is a qualitative measurement of a​ population; a statistic is a qualitative measurement of a sample.   C. A parameter is a qualitative measurement of a​ sample; a statistic is a qualitative measurement of a population.   D. A parameter is a numerical measurement of a​ population; a statistic is a numerical measurement of a sample.